- change ast.Ident back to contain the name and adjust all dependent code
- identifier object information will be added again through an optional
  typechecker phase (in the works).
- remove tracking of scopes in parser - it's easier to do this in a separate
  phase (in the works)
- in godoc, generate popup info table directly instead of through a formatter
  for simpler data flow (at the expense of a little bit more code)

Runs all tests.

As a result of this change, the currently shown popup information
(const, var, type, func, followed by identifier name) will not be
shown anymore temporarily.

R=rsc
CC=golang-dev
https://golang.org/cl/1994041

Rearrange code to clarify handling of %T, Formatter, GoStringer, and Stringer.

R=rsc
CC=golang-dev
https://golang.org/cl/1973043

Makes godoc --http=:1234 not crash on linux/amd64.

R=r
CC=golang-dev
https://golang.org/cl/1975044

Fixes #864.

R=rsc
CC=golang-dev
https://golang.org/cl/1975043

R=rsc
CC=golang-dev
https://golang.org/cl/1995041

not been mailed out for review.

R=r
CC=golang-dev
https://golang.org/cl/1962046

R=rsc
CC=golang-dev
https://golang.org/cl/1987041

R=golang-dev
CC=golang-dev
https://golang.org/cl/1956044

R=imkrasin, rsc
CC=golang-dev
https://golang.org/cl/1943042

draft-ietf-6man-text-addr-representation-07 will introduce
a canonical textual representation format for IPv6 address.

R=rsc
CC=golang-dev
https://golang.org/cl/1856047

R=rsc
CC=golang-dev
https://golang.org/cl/1983043

We can add them back using the new naming scheme should it become important.

R=rsc
CC=golang-dev
https://golang.org/cl/1968042

R=rsc
CC=golang-dev
https://golang.org/cl/1983042

R=rsc
CC=golang-dev
https://golang.org/cl/1951043

R=rsc
CC=golang-dev
https://golang.org/cl/1954044

R=ken2
CC=golang-dev
https://golang.org/cl/1960042

R=adg
CC=golang-dev
https://golang.org/cl/1971042

Also, if the header is bad, exit with a non-zero status.

Other calls to Brdline in the tree, by category:

Reading symbol name from object file:
./cmd/5l/obj.c:486: 		name = Brdline(f, '\0');
./cmd/6l/obj.c:535: 		name = Brdline(f, '\0');
./cmd/8l/obj.c:564: 		name = Brdline(f, '\0');
./libmach/sym.c:292: 		cp = Brdline(bp, '\0');

Reading archive header line (fixed, short):
./cmd/gc/lex.c:287: 	if((a = Brdline(b, '\n')) == nil)
./cmd/gc/lex.c:303: 	if((p = Brdline(b, '\n')) == nil)

Reading object file header line (fixed, short):
./cmd/ld/lib.c:421: 	line = Brdline(f, '\n');

Reading undefined symbol list (unused code):
./cmd/ld/lib.c:773: 	while((l = Brdline(b, '\n')) != nil){

Implementing Brdstr:
./libbio/brdstr.c:36: 		p = Brdline(bp, delim);

The symbol names ones will cause a problem loudly if they
fail: they'll error out with symbol name too long.  This means
that you can't define an enormous struct without giving the
type a name and then stick it in an interface, because the
type's symbol name will be too long for the object file.
Since this will be a loud failure instead of a silent one,
I'm willing to wait until it comes up in practice.

R=r
CC=golang-dev
https://golang.org/cl/1982041

R=ken2
CC=golang-dev
https://golang.org/cl/1983041

The previous set was spotty, incomplete, and confusing.
This CL proposes a regular, clean set with clearer names.
It's also complete.  Many existing methods will be deprecated,
but not in this CL.  Ditto for the tests.

R=rsc, gri
CC=golang-dev, rog
https://golang.org/cl/1946041

go/scanner: return information on semicolon (real or inserted) when
	    found in source
go/parser:  better error message when a semicolon is found unexpectedly

For instance, if an unexpected semicolon is found that was automatically
inserted, the parser error message is now:

    "expected '}', found newline"

Fixes #1006.

R=rsc
CC=golang-dev
https://golang.org/cl/1936044

documentation change only.

R=rsc
CC=golang-dev
https://golang.org/cl/1964043

R=nigeltao_golang
CC=golang-dev
https://golang.org/cl/1941042

Fixes #971.

Parse/ParseFile methods of Template now match template.Parse and .ParseFile methods.
Also made tests being run on Parse and ParseFile be run on Template.ParseFile as well.

R=r
CC=golang-dev
https://golang.org/cl/1741059

Fixed by http://code.google.com/p/go/source/detail?r=d1f41e20a90e
This just adds a test and checks the return value of Bprint.

R=ken2
CC=golang-dev
https://golang.org/cl/1949042

Make Bprint work even when the amount of output
exceeds the available buffer space.

R=r
CC=golang-dev
https://golang.org/cl/1968041

R=r
CC=golang-dev
https://golang.org/cl/1940042

Fixes #1014.

R=rsc
CC=golang-dev
https://golang.org/cl/1941041

R=nigeltao
CC=golang-dev
https://golang.org/cl/1962041

Fixes #1005.

R=rsc, r
CC=golang-dev
https://golang.org/cl/1935041

R=adg
CC=golang-dev
https://golang.org/cl/1743059

image: introduce Transparent and Opaque.

R=r
CC=golang-dev
https://golang.org/cl/1947042

(Removed extraneous "program".)

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/1950041

R=adg
CC=golang-dev
https://golang.org/cl/1952041

stride and rect.

R=r
CC=golang-dev, rog
https://golang.org/cl/1849041

R=r, rsc, gri, rsc1
CC=golang-dev
https://golang.org/cl/1814044

R=r
CC=golang-dev
https://golang.org/cl/1951041

R=nigeltao_golang, r
CC=golang-dev
https://golang.org/cl/1897049

Rect types.

The actual image representation is unchanged. A future change will
replace the {[][]color} with {[]color, stride int, r Rectangle} and
possibly a clip region.

The draw.Color, draw.Point and draw.Rect types will be removed in a
future change. Trying to do it in this one polluted the diff with
trivia.

R=r, rsc
CC=golang-dev
https://golang.org/cl/1918047

Fixes #1013.

R=rsc, gri
CC=golang-dev
https://golang.org/cl/1938041