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

R=r
OCL=28204
CL=28204

R=r
OCL=28201
CL=28201

R=gri
APPROVED=gri
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=28184
CL=28192

value has been received.  This failed with gccgo before
today.

R=ken,r
DELTA=18  (18 added, 0 deleted, 0 changed)
OCL=28185
CL=28190

- template-driven ast printing now can successfully
  reproduce entire Go programs

next steps:
- fine-tuning of output
- print interspersed comments
- cleanup and testing against all Go programs
- replace astprinter

R=r
OCL=28181
CL=28181

drip init function if it doesnt do anything

R=r
OCL=28180
CL=28180

better calling of morestack

R=r
OCL=28179
CL=28179

R=r
DELTA=16  (0 added, 3 deleted, 13 changed)
OCL=28133
CL=28178

of 5g. 5l balks at the output and running 5g with -S shows
the true extent of the disaster. Still, better than
yesterday. Maybe.

Tested on the canonical:

package main
func main() {
}

R=rsc
APPROVED=rsc
DELTA=4182  (4181 added, 0 deleted, 1 changed)
OCL=27601
CL=28175

- fixed a bug and added corresponding test case

R=rsc
DELTA=114  (18 added, 29 deleted, 67 changed)
OCL=28114
CL=28128

R=ken
OCL=28120
CL=28124

R=r
DELTA=12  (9 added, 0 deleted, 3 changed)
OCL=28096
CL=28118

R=r
DELTA=30  (9 added, 1 deleted, 20 changed)
OCL=28104
CL=28117

to match traditional c linkers.

R=r
DELTA=42  (8 added, 12 deleted, 22 changed)
OCL=28101
CL=28115

TBR=rsc
DELTA=2  (1 added, 0 deleted, 1 changed)
OCL=28066
CL=28070

add test for structure alignment/offset.

R=gri
DELTA=49  (35 added, 0 deleted, 14 changed)
OCL=28068
CL=28068

you should be able to convert a pointer to an array to a
slice, you should not be able to convert an array to a slice.
Currently 6g works the other way around.

R=ken,rsc
DELTA=17  (17 added, 0 deleted, 0 changed)
OCL=28033
CL=28067

R=r
DELTA=4  (3 added, 1 deleted, 0 changed)
OCL=28063
CL=28065

don't relay the signal when restarting it.

R=r
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=28060
CL=28064

iant: will this be ok in gccgo?

R=rsc
DELTA=9  (8 added, 0 deleted, 1 changed)
OCL=28059
CL=28062