bug157 and bug158

R=rsc
DELTA=59  (59 added, 0 deleted, 0 changed)
OCL=29632
CL=29634

[]int -> string is already in the document.

DELTA=7  (1 added, 1 deleted, 5 changed)
OCL=29622
CL=29631

*** Reason for rollback ***

  these semicolons are necessary only because of a bug in 6g

*** Original change description ***

add missing semicolons in example

TBR=gri
OCL=29624
CL=29624

R=r
OCL=29623
CL=29623

R=r
OCL=29619
CL=29619

R=r
DELTA=46  (46 added, 0 deleted, 0 changed)
OCL=29569
CL=29614

R=r
OCL=29612
CL=29612

The code was already careful not to use malloc/free
for stack growth during calls to malloc.
Avoid them during calls to free too.

R=r
DELTA=9  (7 added, 0 deleted, 2 changed)
OCL=29606
CL=29610

R=ken
OCL=29577
CL=29589

passes ridiculous test from CL 29569.

R=ken
OCL=29571
CL=29573

R=ken
OCL=29568
CL=29570

R=r
OCL=29544
CL=29544

fewer moves, fewer stupid LEALs.
powser1 runs (with evaln commented out).
beginnings of floating point.

R=ken
OCL=29540
CL=29543

get the code going.

R=rsc
APPROVED=rsc
DELTA=4752  (1723 added, 948 deleted, 2081 changed)
OCL=29403
CL=29530

R=rsc
APPROVED=rsc
DELTA=132  (16 added, 45 deleted, 71 changed)
OCL=29468
CL=29497

	* conversions all in one place.
	* no separate load, store phases;
	  direct memory addressing when possible
	  (this is the x86 after all!).
	  avoids extra registers, extra MOVQs.
	* fixes int32 -> uint64 bug
	  (was zero-extending)

R=ken
OCL=29482
CL=29484

R=r
OCL=29479
CL=29479

R=rsc
DELTA=5  (0 added, 0 deleted, 5 changed)
OCL=29475
CL=29478

R=r
DELTA=1  (0 added, 1 deleted, 0 changed)
OCL=29473
CL=29477

between first and second pass of converting
[]int to string.

R=r
OCL=29467
CL=29467

R=r
OCL=29466
CL=29466

R=ken
OCL=29448
CL=29448

R=dsymonds
DELTA=5  (5 added, 0 deleted, 0 changed)
OCL=29424
CL=29447

R=rsc
DELTA=35  (35 added, 0 deleted, 0 changed)
OCL=29442
CL=29444

TBR=rsc
DELTA=14  (14 added, 0 deleted, 0 changed)
OCL=29441
CL=29441

R=ken
OCL=29425
CL=29427

R=ken
OCL=29426
CL=29426

can run 64-bit sieve and powser.
interfaces are limping along.
next hurdle is floating point.

R=ken
OCL=29418
CL=29423

R=rsc
APPROVED=rsc
DELTA=40  (38 added, 0 deleted, 2 changed)
OCL=29351
CL=29422

R=r
OCL=29421
CL=29421

R=r
OCL=29419
CL=29419

of getenv by low-level runtime easier.
fix 32-bit bug in gc (there are still more).

R=ken
OCL=29415
CL=29415

R=r
DELTA=129  (78 added, 1 deleted, 50 changed)
OCL=29411
CL=29413

R=ken
OCL=29412
CL=29412

R=r
OCL=29409
CL=29409

test/turing.go runs if you move the big array off its stack.

finally remembered to g4 add cgen.c gsubr.c

R=ken
OCL=29408
CL=29408

R=ken
OCL=29407
CL=29407

R=r
OCL=29405
CL=29405

	* string format changed
	* files got renamed
	* new files that i forgot to check in last time
updates are all copy and paste from 6g

R=ken
OCL=29385
CL=29400

people using ar for non-object archives
will just have to deal with the warnings.

R=r
DELTA=3  (2 added, 0 deleted, 1 changed)
OCL=29384
CL=29398