add test for string range.

test has minor failure: after loop the index == len(s); should be len(s)-1
in this case.  according to spec, vars are left at position at last
iteration.

R=ken,rsc
DELTA=259  (161 added, 96 deleted, 2 changed)
OCL=27343
CL=27343

R=ken
OCL=27342
CL=27342

R=r
OCL=27332
CL=27332

R=rsc
OCL=27331
CL=27331

for linux system calls).

R=rsc
APPROVED=rsc
DELTA=3  (3 added, 0 deleted, 0 changed)
OCL=27325
CL=27328

R=rsc
APPROVED=rsc
DELTA=312  (312 added, 0 deleted, 0 changed)
OCL=27133
CL=27326

extending segmented stack

R=r
OCL=27319
CL=27319

TBR=r
OCL=27306
CL=27306

R=rsc
OCL=27304
CL=27304

order of evaluation && and ||

R=r
OCL=27294
CL=27294

R=r
OCL=27293
CL=27293

The HTML one here is just a stub - should use an HTML library to do the right thing.

R=rsc
DELTA=54  (47 added, 2 deleted, 5 changed)
OCL=27250
CL=27250

R=rsc
DELTA=1421  (736 added, 685 deleted, 0 changed)
OCL=27249
CL=27249

R=rsc
OCL=27248
CL=27248

R=rsc
DELTA=134  (75 added, 41 deleted, 18 changed)
OCL=27245
CL=27247

store only the original import path string (+ .a)
if 6g resolves it to an archive file.
let 6l re-resolve the .a at link time.

this lets libraries build against an archive
in the current directory but get used
against an installed archive.

R=r
OCL=27244
CL=27244

R=rsc
OCL=27243
CL=27243

R=rsc
OCL=27242
CL=27242

R=rsc
DELTA=663  (663 added, 0 deleted, 0 changed)
OCL=27239
CL=27241

- Filter
- Find
- Partition

R=rsc
APPROVED=rsc
DELTA=117  (92 added, 17 deleted, 8 changed)
OCL=27135
CL=27240

R=ken
OCL=27202
CL=27202

x := f();

used to give
	fatal error: dowidth fn struct struct { int; int }

now gives
	assignment count mismatch: 1 = 2

R=ken
OCL=27198
CL=27201

submitted CL without applying edits.

make changes from CL 27142 review

R=r
DELTA=26  (17 added, 3 deleted, 6 changed)
OCL=27155
CL=27199

R=r
DELTA=13  (11 added, 0 deleted, 2 changed)
OCL=27147
CL=27154

R=r
DELTA=17  (17 added, 0 deleted, 0 changed)
OCL=27146
CL=27153

use path.Clean in web server to sanitize URLs.

http://triv/go/../../../etc/passwd

no longer serves the password file.
it redirects to

http://triv/etc/passwd

which then gets a 404.

R=r
DELTA=288  (286 added, 0 deleted, 2 changed)
OCL=27142
CL=27152

R=rsc
DELTA=5  (1 added, 0 deleted, 4 changed)
OCL=27148
CL=27151

6g says: bug138.go:8: constant -1 overflows uint
gccgo says: bug138.go:8:16: error: integer constant overflow

R=rsc
DELTA=19  (0 added, 19 deleted, 0 changed)
OCL=27099
CL=27149

R=ken
OCL=27145
CL=27145

R=rsc
DELTA=63  (59 added, 0 deleted, 4 changed)
OCL=27143
CL=27143

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