Fixes #432.

R=r, r2
CC=golang-dev
https://golang.org/cl/3869043

This will enable functions which use unsafe.Pointer as an argument
to be correctly exported by cgo.

R=rsc
CC=golang-dev
https://golang.org/cl/3849043

R=rsc
CC=golang-dev
https://golang.org/cl/3902044

This change prevents enum consts from conflicting with themselves
when loaded twice in different go files.

Fixes #1400.

R=rsc
CC=golang-dev
https://golang.org/cl/3849044

Regular expressions may now be used in conjuction with full text
search. Godoc will show the first 10000 occurences in the source
code and highlight the respective text segments.

- added new flag -testDir to specify a small directory for testing
  (fast index creation; default = "")

- use new FormatText function to format text and Go source
  code in HTML, supporting multiple kinds of text selections
  simulatenously); this replaces the uses of go/printer
  Stylers

- for now removed currently unused mechanism for identifier-
  specific JS popups (will come back in some form once we
  have type or other useful information)

- various typo fixes and minor cleanups throughout

Missing:
- indexing of non-.go files

R=r, r2
CC=golang-dev, rsc
https://golang.org/cl/3699041

Fixes #1285.

R=r, rsc, iant, ken2, r2
CC=golang-dev
https://golang.org/cl/3918041

R=rsc
CC=golang-dev
https://golang.org/cl/3913043

The After code is trivially generalisable to provide support
for this, and it is possible to use AfterFunc to do
things that After cannot, such as waiting
for many events at varied times without an overhead
of one goroutine per event.

R=rsc, r
CC=golang-dev
https://golang.org/cl/3905041

- added position information for [ and ] brackets of Index and Slice expression nodes
- removed a TODO in go/printer

R=r, rsc
CC=golang-dev
https://golang.org/cl/3867045

Fixes #1401.

R=golang-dev, agl1
CC=golang-dev
https://golang.org/cl/3937041

* correctly ignore obsolete ticks
* fix update of next alarm time
* tighten alarm channel buffers
Fixes #1379.

R=r, adg, r2
CC=golang-dev, soul9
https://golang.org/cl/3789045

R=r
CC=golang-dev
https://golang.org/cl/3907042

If we don't do this, then when C code calls back to Go code
which panics, we lose space on the scheduler stack.  If that
happens a lot, eventually there is no space left on the
scheduler stack.

R=rsc
CC=golang-dev
https://golang.org/cl/3898042

I needed a way to read lines without worrying about \n and \r\n.

R=r, rsc
CC=golang-dev
https://golang.org/cl/2859041

R=rsc
CC=golang-dev
https://golang.org/cl/3902042

R=rsc
CC=golang-dev
https://golang.org/cl/3921041

previous version was built with -l32; should be -b32

R=ken
CC=golang-dev
https://golang.org/cl/3867044

(e.g.: echo 'package main' | gofmt -r 'x->7'
cannot change the package name to 7)

R=rsc
CC=golang-dev
https://golang.org/cl/3913041

Not absolutely certain it's right to do this, but since there's
no error value coming back, it seems reasonable.

Fixes #1392.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/3896042

Error check was inverted.

Fixes #1396.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/3851042

Fixes #1384.

R=rsc
CC=golang-dev
https://golang.org/cl/3912041

R=rsc
CC=golang-dev
https://golang.org/cl/3909041

R=nigeltao, nigeltao_gnome
CC=golang-dev
https://golang.org/cl/3892041

R=nigeltao, nigeltao_gnome
CC=golang-dev
https://golang.org/cl/3829043

This permits exporting crosscall2 from the runtime/cgo
package.

R=rsc
CC=golang-dev
https://golang.org/cl/3885041

R=r, brainman, r2
CC=golang-dev
https://golang.org/cl/3881041

It's incorrect, and it causes cryptic linker errors.

Fixes #1360.

R=r, r2
CC=golang-dev
https://golang.org/cl/3880041

Fixes #1381.

R=r, r2
CC=golang-dev
https://golang.org/cl/3775050

A cursory reading of the cgo code suggests this
should be necessary, though I don't have access
to a FreeBSD machine for testing.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/3746047

Fixes #1394.

R=ken2
CC=golang-dev
https://golang.org/cl/3879041

Fixes #1389.

R=agl1
CC=golang-dev
https://golang.org/cl/3827043

R=rsc, r, r2
CC=golang-dev
https://golang.org/cl/3421042

Also fix a <p> error in go_spec.html.

Fixes #1370.

R=rsc, gri
CC=golang-dev
https://golang.org/cl/3835043

Fixes #1383.

R=r
CC=golang-dev
https://golang.org/cl/3821044

Fixes #1376.

R=r
CC=golang-dev
https://golang.org/cl/3869042

R=adg, rsc
CC=golang-dev
https://golang.org/cl/3821042

R=gri
CC=golang-dev
https://golang.org/cl/3766045

Fixes #1369.

R=rsc
CC=golang-dev
https://golang.org/cl/3731046

The old loop was a bit odd; change it to be more regular.
This also enables a diagnostic for Printf("%", 3): %!(NOVERB)

R=rsc, Kyle C
CC=golang-dev
https://golang.org/cl/3749044

Fixes #1388.

R=rsc
CC=golang-dev
https://golang.org/cl/3749043