* exec.LookPath
	* flag.Args
	* os.Remove
	* strings.HasPrefix
	* strings.HasSuffix
	* syscall.Rmdir

TBR=r
DELTA=100  (100 added, 0 deleted, 0 changed)
OCL=27373
CL=27392

R=gri
DELTA=272  (38 added, 139 deleted, 95 changed)
OCL=27372
CL=27390

R=r
DELTA=5  (3 added, 0 deleted, 2 changed)
OCL=27371
CL=27389

R=r
DELTA=10  (0 added, 0 deleted, 10 changed)
OCL=27374
CL=27388

add comment describing new web server tree.
make room for command line interface.
use new path package to get rid of doubled slashes.
use new Chdir function to avoid goroot + everything.

implement new /pkg/ tree instead of using regexps.

R=gri
DELTA=267  (103 added, 72 deleted, 92 changed)
OCL=27150
CL=27367

R=r
DELTA=229  (227 added, 0 deleted, 2 changed)
OCL=27200
CL=27366

R=ken
OCL=27353
CL=27353

R=r
OCL=27344
CL=27344

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