Fixes #2194.

R=rsc, alex.brainman, vcc.163, jp
CC=golang-dev
https://golang.org/cl/4977044

R=mikesamuel
CC=golang-dev
https://golang.org/cl/4968063

R=ken2
CC=golang-dev
https://golang.org/cl/4967052

Fixes Han-Wen's termite bug.

R=lvd
CC=golang-dev
https://golang.org/cl/4977052

- read search index files in groutine to avoid
  start-up failure on app engine because reading
  the files takes too long
- permit usage of search index files and indexer
- minor cosmetic cleanups

R=dsymonds
CC=golang-dev
https://golang.org/cl/4952050

Needed to ensure that finding the last boundary does not result in O(n^2)-like behavior.
Now prevents lookbacks beyond 31 characters across the board (starter + 30 non-starters).
composition.go:
- maxCombiningCharacters now means exactly that.
- Bug fix.
- Small performance improvement/ made code consistent with other code.
forminfo.go:
- Bug fix: ccc needs to be 0 for inert runes.
normalize.go:
- A few bug fixes.
- Limit the amount of combining characters considered in FirstBoundary.
- Ditto for LastBoundary.
- Changed semantics of LastBoundary to not consider trailing illegal runes a boundary
  as long as adding bytes might still make them legal.
trie.go:
- As utf8.UTFMax is 4, we should treat UTF-8 encodings of size 5 or greater as illegal.
  This has no impact on the normalization process, but it prevents buffer overflows
  where we expect at most UTFMax bytes.

R=r
CC=golang-dev
https://golang.org/cl/4963041

Interesting that Fprintf can do zero mallocs.
(Sprintf must allocate the returned string.)

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/4977049

No need for lexInsideAction to loop.
Fixes #2217.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/4963054

R=nigeltao
CC=golang-dev
https://golang.org/cl/4962049

Fixes #2185.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4967046

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4985041

Was keeping a pointer to the labeled statement in n->right,
which meant that generic traversals of the tree visited it twice.
That combined with aggressive flattening of the block
structure when possible during parsing meant that
the kinds of label: code label: code label: code sequences
generated by yacc were giving the recursion 2ⁿ paths
through the program.

Fixes #2212.

R=lvd
CC=golang-dev
https://golang.org/cl/4960050

Fixes #2213.

R=rsc
CC=golang-dev
https://golang.org/cl/4975047

R=r
CC=golang-dev
https://golang.org/cl/4968057

When installing profiling tools on Mac OS X print
message if there is a problem with /usr/local/bin

Fixes #2209.

R=golang-dev, r, adg
CC=golang-dev, mike.rosset
https://golang.org/cl/4950057

R=r, adg
CC=golang-dev
https://golang.org/cl/4975046

This transitions into a JS state when entering any attribute whose
name starts with "on".

It does not yet enter a JS on entry into a <script> element as script
element handling is introduced in another CL.

R=nigeltao
CC=golang-dev
https://golang.org/cl/4968052

R=rsc, r
CC=golang-dev
https://golang.org/cl/4977046

changeset: 8812:3fb3e88d5aa8
gc: unsafe.Alignof, unsafe.Offsetof, unsafe.Sizeof now return uintptr

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4951051

R=r
CC=golang-dev
https://golang.org/cl/4973050

- KindRuns don't need to repeat SpotKind,
  it is stored in each Spot
- removed extra indirection from FileRuns
  to KindRuns
- slight reduction of written index size
  (~500KB)

R=rsc
CC=golang-dev
https://golang.org/cl/4969052

Also makes sync benchmark concurrent.

R=r, rsc
CC=golang-dev
https://golang.org/cl/4911043

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4972053

R=golang-dev, n13m3y3r, r
CC=golang-dev
https://golang.org/cl/4958053

Does as much as possible in data layout instead
of during the init function.

Handles var x = y; var y = z as a special case too,
because it is so prevalent in package unicode
(var Greek = _Greek; var _Greek = []...).

Introduces InitPlan description of initialized data
so that it can be traversed multiple times (for example,
in the copy handler).

Cuts package unicode's init function size by 8x.
All that remains there is map initialization, which
is on the chopping block too.

Fixes sinit.go test case.

Aggregate DATA instructions at end of object file.

Checkpoint.  More to come.

R=ken2
CC=golang-dev
https://golang.org/cl/4969051

My string literal was being rewritten from
"runtime.SysReserve(%p, %D) = error %d"
to
"runtime.SysReserve ( %p , %D ) = error %d"

R=iant
CC=golang-dev
https://golang.org/cl/4972051

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/4963050

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/4968054

R=golang-dev, alex.brainman
CC=golang-dev, vcc.163
https://golang.org/cl/4974041

Off by default (security risk), but users can
wire it up if desired.

Fixes #2113

R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/4959049

- canonicalize package descriptors
- remove duplicate storage of file paths
- reduces (current) written index file by approx 3.5MB
(from 28434237B to 24686643B, or 13%)

- next step: untangle DAG (when serializing, using
gob, the index dag explodes into an index tree)

R=dsymonds
CC=golang-dev
https://golang.org/cl/4983042

R=golang-dev, rsc, bradfitz, nigeltao
CC=golang-dev
https://golang.org/cl/4956046

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/4956051

R=golang-dev
CC=golang-dev, rsc
https://golang.org/cl/4977045

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/4964052

R=ken2
CC=golang-dev
https://golang.org/cl/4950052

Fixes #2178.
Patch2: Fixed allocating shadow space for stdcall (must be at least 32 bytes in any case)
Patch3: Made allocated chunk smaller.
Patch4: Typo
Patch5: suppress linktime warning "runtime.callbackasm: nosplit stack overflow"
Patch6: added testcase src/pkg/syscall/callback_windows_test.go
Patch7: weakly related files moved to https://golang.org/cl/4965050 https://golang.org/cl/4974041 https://golang.org/cl/4965051
Patch8: reflect changes https://golang.org/cl/4926042/
Patch9: reflect comments

R=golang-dev, alex.brainman, vcc.163
CC=golang-dev, hectorchu
https://golang.org/cl/4958042

R=golang-dev
CC=golang-dev, rsc
https://golang.org/cl/4975044

windows/386: clean stack after syscall (it is necessary after call cdecl functions and does not have an effect after stdcall)

Result of discussion here: http://groups.google.com/group/golang-nuts/browse_thread/thread/357c806cbb57ca62

R=golang-dev, bradfitz, alex.brainman, hectorchu, rsc
CC=golang-dev
https://golang.org/cl/4961045

1. adds a urlPart field to context
2. implements tURL to figure out the URL part
3. modifies joinContext to allow common context mismatches
   around branches to be ignored when not material as in
   <a href="/foo{{if .HasQuery}}?q={{.Query}}{{/if}}">
4. adds a pipeline function that filters dynamically inserted
   protocols to prevent code injection via URLs.

R=nigeltao
CC=golang-dev
https://golang.org/cl/4957041