use Value() in print to print underlying value
from interface.

before:
	package main
	import "fmt"
	func main() {
		x := []interface{} {1, "hello", 2.5};
		fmt.Println(x[0], x[1], x[2], x);
	}

	1 hello 2.5 [<non-nil interface> <non-nil interface> <non-nil interface>]

after:
	1 hello 2.5 [1 hello 2.5]

R=r
DELTA=44  (22 added, 16 deleted, 6 changed)
OCL=27139
CL=27141

	string(b)[0:n]
instead of the more direct string(b[0:n]).
convert to the more direct form.

R=r
DELTA=5  (0 added, 0 deleted, 5 changed)
OCL=27082
CL=27140

R=r
APPROVED=r
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=27123
CL=27130

Add a Data method to vector.Vector.

R=r,rsc
APPROVED=rsc
DELTA=173  (170 added, 0 deleted, 3 changed)
OCL=26980
CL=27098

* make([100]int) was being compiled to
	make([]int), kind of.
* []this = [100]that was working for any this, that.

turned up a typo in pipe_test.go

R=ken
OCL=27081
CL=27081

- godoc now supports the following url prefixes:
  /doc/ for package documentation
  /file/ for files (directories, html, and .go files)
  /spec for the spec
  /mem for the memory model
- formatting of comments has been fixed
- tons of minor cleanups (still more to do)

Still missing:
- pretty printing of source is not as pretty as it used to be
(still a relict from the massive AST cleanup which has't quite made it's way everywhere)
- documentation entries should be sorted
- comments in code is not printed or not properly printed

TBR=r
DELTA=416  (182 added, 100 deleted, 134 changed)
OCL=27078
CL=27078

R=rsc
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=27061
CL=27061

(i'd be happy to drop the paren one as well, reducing it to one case)

DELTA=4  (0 added, 3 deleted, 1 changed)
OCL=27058
CL=27060

R=rsc
DELTA=1  (1 added, 0 deleted, 0 changed)
OCL=27057
CL=27059

(even if the methods are exported)

R=rsc
OCL=27056
CL=27056

- fixed printing of function literals (require separating ";")

R=rsc
OCL=27055
CL=27055

- use /src and /doc prefix in URL to distinguish output type (per rsc)
- fixed a bug in an internal string function
- ignore files ending in _test.go (consider them test files)

R=rsc
OCL=27054
CL=27054

	; cat >http.go
	package main
	import "http"  // intended the library, not this file
	^D
	; 6g http.go
	; 6g http.go
	http.go:4: export/package mismatch: init
	;

new error:

	http.6:7 http.go:3: cannot import package main

R=ken
OCL=27053
CL=27053

was copying a bit too much about t into n,
like whether the signature was queued to be printed.
(bug reported by anton)

was also editing t, meaning you could do
	type T int;
	func (p int) Meth() { }

both fixed.

R=ken
OCL=27052
CL=27052

this avoids problems people have run into with
multiple closures in the same package.

when preparing filename, only cut off .go, not .anything.
this fixes a bug tgs ran into with foo.pb.go and foo.go
in the same package.

also turn bad identifier chars from filename into
underscores: a-b.pb.go => a_b_pb

R=ken
OCL=27050
CL=27050

first round of cleanups:
- removed extra .html templates (reduced to one)
- removed dependencies on various local files
- minor fixes throughout

Basic docserver is now operational: Automatically finds all
(multi-file) packages under a root and serves either file
or package documentation.

R=r
OCL=27049
CL=27049

the assignment on a type switch

R=r
OCL=27048
CL=27048

package main
func main() { func(){}() + + }

x.go:2: syntax error near _f001

becomes

x.go:2: syntax error near func

R=ken
OCL=27047
CL=27047

turned it off while debugging 8 runtime problem,
checked in the change accidentally.

R=r
DELTA=4  (0 added, 0 deleted, 4 changed)
OCL=27040
CL=27046

	package main
	func main() {
		println("hello,", 123);
	}

R=ken
OCL=27043
CL=27043

R=r
DELTA=4  (4 added, 0 deleted, 0 changed)
OCL=26983
CL=27041

- renamed gds -> godoc
- functionality to find and serve packages
  (to get a list of packages provide dir path + "?p")

Next steps: cleanups, better formatting, fine-tuning of output

R=r
OCL=27037
CL=27039

(this removes a lot of string() conversions down the road)
- a few minor adjustments

R=rsc
DELTA=11  (0 added, 0 deleted, 11 changed)
OCL=27029
CL=27038

R=r
OCL=27026
CL=27028

- have explicit XSpec nodes for declarations
- have a general GenDecl node instead of DeclList

R=rsc
DELTA=164  (52 added, 52 deleted, 60 changed)
OCL=27005
CL=27027

R=r,rsc
APPROVED=rsc
DELTA=167  (166 added, 0 deleted, 1 changed)
OCL=26982
CL=27017

twice instead of once.

R=r
OCL=27015
CL=27015

R=rsc
DELTA=2  (0 added, 0 deleted, 2 changed)
OCL=27003
CL=27003

- package headers
- constants
- variables
- formatted comments

Next steps:
- sorted output
- collection of all files belonging to a package
- fine-tuning of output

R=r
OCL=26997
CL=26997

the largest remaining source file in this directory.

TBR=gri
OCL=26984
CL=26984

160 - 75 was just barely not enough for deferproc + morestack.

added enum names and bumped to 256 - 128.
added explanation.

changed a few mal() (garbage-collected) to
malloc()/free() (manually collected).

R=ken
OCL=26981
CL=26981

R=rsc
APPROVED=rsc
DELTA=4  (2 added, 2 deleted, 0 changed)
OCL=26978
CL=26978

R=r
OCL=26974
CL=26976

R=r
DELTA=156  (149 added, 2 deleted, 5 changed)
OCL=26973
CL=26973

- adjustments to match new ast/parser interface
- removed printer.go; functionality now in astprinter.go and docprinter.go
  (more cleanups pending)
- enabled new doc printing in gds
  (lots of fine tuning missing, but pieces falling into place; e.g. methods
  associated with types. Consts, Vars, to come. Collection of all files
  belonging to a package to come)

R=r
OCL=26970
CL=26972

   - minor adjustments as suggested by rsc
2) Added parser_test fragment
3) Renamed some types in AST.go per rsc request

R=rsc
DELTA=2053  (2027 added, 0 deleted, 26 changed)
OCL=26963
CL=26971

	remove use of _subv in vlrt.c
	darwin/386/signal.c
	darwin/386/*
	linux/386/* (forgotten before)

can run empty program on darwin/386 now.

R=r
DELTA=1140  (1021 added, 114 deleted, 5 changed)
OCL=26942
CL=26968

R=r
DELTA=6  (3 added, 0 deleted, 3 changed)
OCL=26944
CL=26967

R=rsc
OCL=26959
CL=26959

	package main
	func main() {
	}

and not much else.

R=ken
OCL=26943
CL=26943