goc2c moves here.
parallel builds like old makefiles (-j4).
add clean command.
add banner command.
implement Go version check.
real argument parsing (same as 6g etc)

Windows changes will be a separate CL.

R=golang-dev, bradfitz, iant
CC=golang-dev
https://golang.org/cl/5622058

R=rsc
CC=golang-dev
https://golang.org/cl/5630045

The letter is $A, not $O.
($O is set accidentally, but not for long.)

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5629045

Add // +build ignore to mkrunetype.c,
rename runetypebody to be .h since it is #included,
delete old runetypebody tables.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5627043

This change addresses a subset of the issues raised in bug 2841.

R=rsc
CC=golang-dev
https://golang.org/cl/5629044

For instance, don't talk about gofix, talk about the
fix tool or "go tool fix".

R=golang-dev, rsc, r
CC=golang-dev
https://golang.org/cl/5608053

Part of issue 2833, but works fine with current test runner.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5606056

R=golang-dev, rsc, r
CC=golang-dev
https://golang.org/cl/5629043

9 is prime if it's a hot day.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5630043

R=rsc
CC=golang-dev
https://golang.org/cl/5626043

Fix some receiver names for consistency.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5624043

Thanks to Andrey Mirtchovski for tracking this down.

This was broken by CL 5528077 which removed the InsertSemis
flag from go/scanner - as a result, semicolons are now always
inserted and the respective indexer code checked for the
wrong token.

Replaced the code by a direct identifier test.

R=rsc
CC=golang-dev
https://golang.org/cl/5606065

R=adg
CC=golang-dev
https://golang.org/cl/5615055

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5620053

This enables builds on systems without Bison/yacc.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5622050

This enables builds on systems without Bison/yacc.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/5622051

Fixes #2870.

R=golang-dev, agl, lvd
CC=golang-dev
https://golang.org/cl/5618050

Was miscompiled by gccgo.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5622054

When slicing a slice, the bounds may be > len as long as they
are <= cap.  Interestingly, gccgo got that wrong and still
passed the testsuite and all the library tests.

R=golang-dev, rsc, iant
CC=golang-dev
https://golang.org/cl/5622053

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5604051

R=rsc, remyoudompheng, gustavo, dsymonds
CC=golang-dev
https://golang.org/cl/5617057

The go- is redundant now that the directory is required
to be inside $GOROOT.  Rob LGTMed the idea.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5618044

R=rsc, dsymonds
CC=golang-dev, gri
https://golang.org/cl/5622045

Fixes #2824.

R=rsc, r
CC=golang-dev
https://golang.org/cl/5615043

R=rsc
CC=golang-dev
https://golang.org/cl/5615054

Fixes #2863.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5620058

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5608044

This is the analogue to the encoding/base64 change,
https://golang.org/cl/5610045.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5617056

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5617055

This reduces the overhead necessary to work with OS-specific
file details, hides the implementation of FileStat, and
preserves the implementation-specific nature of Sys.

Expressions such as:

  stat.(*os.FileInfo).Sys.(*syscall.Stat_t).Uid
  fi1.(*os.FileStat).SameFile(fi2.(*os.FileStat))

Are now spelled as::

  stat.Sys().(*syscall.Stat_t).Uid
  os.SameFile(fi1, fi2)

R=cw, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/5448079

Fixes issue: 2832

R=rsc, gri
CC=golang-dev
https://golang.org/cl/5616060

This makes encoding/base32 be consistent with encoding/base64.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5615053

R=rsc
CC=golang-dev
https://golang.org/cl/5606057

I fixed types_linux.go yesterday but missed the others.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5620054

dist is short for distribution.  This is the new Go distribution tool.

The plan is to replace the Makefiles with what amounts to
'go tool dist bootstrap', although it cannot be invoked like
that since it is in charge of getting us to the point where we
can build the go command.

It will also add additional commands to replace bash scripts
like test/run (go tool dist testrun), eventually eliminating our
dependence on not just bash but all the Unix tools and all
of cygwin.

This is strong enough to build (cc *.c) and run (a.out bootstrap)
to build not just the C libraries and tools but also the basic
Go packages up to the bootstrap form of the go command
(go_bootstrap).  I've run it successfully on both Linux and Windows.
This means that once we've switched to this tool in the build,
we can delete the buildscripts.

This tool is not nearly as nice as the go tool.  There are many
special cases that turn into simple if statements or tables in
the code.  Please forgive that.  C does not enjoy the benefits
that we designed into Go.

I was planning to wait to do this until after Go 1, but the
Windows builders are both broken due to a bug in either
make or bash or both involving the parsing of quoted command
arguments.  Make thinks it is invoking

        quietgcc -fno-common -I"c:/go/include" -ggdb -O2 -c foo.c

but bash (quietgcc is a bash script) thinks it is being invoked as

        quietgcc -fno-common '-Ic:/go/include -ggdb' -O2 -c foo.c

which obviously does not have the desired effect.  Rather than fight
these clumsy ports, I accelerated the schedule for the new tool.
We should be completely off cygwin (using just the mingw gcc port,
which is much more standalone) before Go 1.

It is big for a single CL, and for that I apologize.  I can cut it into
separate CLs along file boundaries if people would prefer that.

R=golang-dev, adg, gri, bradfitz, alex.brainman, dsymonds, iant, ality, hcwfrichter
CC=golang-dev
https://golang.org/cl/5620045

Fixes #2170.

R=golang-dev, cw, adg
CC=golang-dev
https://golang.org/cl/5618045

R=rsc, dsymonds, bsiegert, rogpeppe
CC=golang-dev
https://golang.org/cl/5619052

R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/5617053

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5615050

R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/5617050