io.Read->io.Reader
	io.Write,Close,etc.->io.Writer,Closer etc.

R=rsc
DELTA=190  (0 added, 0 deleted, 190 changed)
OCL=28525
CL=28535

R=rsc
DELTA=15  (0 added, 5 deleted, 10 changed)
OCL=28526
CL=28532

R=rsc
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=28528
CL=28531

- cleanup of open issues section

R=r
DELTA=31  (12 added, 9 deleted, 10 changed)
OCL=28450
CL=28513

R=r
DELTA=14  (1 added, 4 deleted, 9 changed)
OCL=28447
CL=28509

R=r
DELTA=24  (24 added, 0 deleted, 0 changed)
OCL=28451
CL=28508

dsymonds confirms that this one works.

R=r
DELTA=50  (23 added, 17 deleted, 10 changed)
OCL=28433
CL=28444

(slipped through the cracks last time)

R=rsc
DELTA=2436  (1337 added, 1090 deleted, 9 changed)
OCL=28427
CL=28443

R=rsc
APPROVED=rsc
DELTA=6  (5 added, 0 deleted, 1 changed)
OCL=28398
CL=28430

also tests method calls on ptr to interface value.

R=r
DELTA=74  (74 added, 0 deleted, 0 changed)
OCL=28419
CL=28424

with method m, s.m() is ok and m now shows up
in s's method set for interface runtime.

see http://cl/28419-p2 for new test interface10.go.

R=ken
OCL=28420
CL=28423

net code on IPv4-only machines.

R=r
DELTA=27  (25 added, 0 deleted, 2 changed)
OCL=28404
CL=28411

part 2; missing files

R=ken
OCL=28408
CL=28410

replace "shape error across CALL" with more information.

x.go:7: not enough arguments to CALL
	a int, b int
	int
x.go:10: assignment count mismatch: 3 = 2
x.go:12: too many arguments to RETURN
	[no arguments expected]
	int, int, int

also leave type alone after conversion failure,
for later errors:

bug049.go:6: cannot convert nil constant to string
bug049.go:6: illegal types for operand: EQ
	string
	nil		# this used to be blank

R=ken
OCL=28405
CL=28407

	TEXT tramp
		MOVQ 8(SP), AX
		ADDQ $40, AX
		MOVQ AX, 8(SP)
		JMP oldfunc

	is now

	TEXT tramp
		ADDQ $40, 8(SP)
		JMP oldfunc

	and if s/40/0/, then it simplifies to

	TEXT tramp
		JMP oldfunc

	(the tramp is still needed to satisfy
	symbol references from other object files)

R=ken
OCL=28377
CL=28381

R=r
DELTA=134  (134 added, 0 deleted, 0 changed)
OCL=28373
CL=28380

will submit with fixed compiler

R=r
DELTA=2  (0 added, 0 deleted, 2 changed)
OCL=28371
CL=28379

R=ken
OCL=28374
CL=28378

- format-driven pretty printing now handles all of Go code
- better error handling

R=r
OCL=28370
CL=28372

R=r
OCL=28369
CL=28369

so that 6l can discard strings used by dead code.
also, for short strings, generate DUPOK global
symbols so that references to, say, "%s: %s" in
multiple files result in only a single symbol.

R=ken
OCL=28361
CL=28361

fix that and clean up state handling a little.

R=rsc
DELTA=44  (18 added, 8 deleted, 18 changed)
OCL=28359
CL=28359

R=r
OCL=28321
CL=28357

TBR=gri
OCL=28320
CL=28320

R=r
OCL=28319
CL=28319

R=r
DELTA=9298  (4760 added, 4536 deleted, 2 changed)
OCL=28317
CL=28317

R=ken
OCL=28314
CL=28314

simplify run.bash now that lib has make test that recurs.

R=rsc
DELTA=1179  (578 added, 596 deleted, 5 changed)
OCL=28313
CL=28313

R=r
DELTA=40  (40 added, 0 deleted, 0 changed)
OCL=28308
CL=28311

no substantive changes except:
	- new Makefiles, all auto-generated
	- go/src/lib/Makefile has been extensively edited

R=rsc
OCL=28310
CL=28310

	* byteastring is no longer used
	* do not generate ODCL, OAS for globals
	  (wasn't generating any code but might
	  save one or two init functions)
	* do not call self from Init function

R=ken
OCL=28309
CL=28309

R=r
DELTA=42  (20 added, 22 deleted, 0 changed)
OCL=28295
CL=28295

editing the firstp list was ineffective,
because follow rebuilds it from the textp list.

the symbols for dead code were being dropped
from the binary but the code was all still there.

text for fmt.Printf("hello, world\n") drops
from 143945 to 128650.

R=r,ken
DELTA=22  (20 added, 0 deleted, 2 changed)
OCL=28255
CL=28290

- more light-weight
- better buffer management
- added test cases

R=r
DELTA=227  (167 added, 35 deleted, 25 changed)
OCL=28252
CL=28289

R=r
DELTA=10  (0 added, 10 deleted, 0 changed)
OCL=28258
CL=28287

R=r
DELTA=17  (2 added, 9 deleted, 6 changed)
OCL=28286
CL=28286

R=rsc
DELTA=6  (1 added, 0 deleted, 5 changed)
OCL=28242
CL=28256

1. dont clear external and heap objects
2. propagate constant assignment

R=r
OCL=28254
CL=28254

It now exports a Var interface (anyone can export their own custom var types now), so users need to create and manage their own vars and mark them as exportable via the Publish function. They are exposed via /debug/vars.

R=r,rsc
APPROVED=r
DELTA=605  (314 added, 186 deleted, 105 changed)
OCL=28143
CL=28239

  (this corresponds to the currently running version of godoc)

R=r
DELTA=11  (0 added, 10 deleted, 1 changed)
OCL=28238
CL=28238