only visible change is that evaluating an expression returns a
interface{} instead of a Value.

R=rsc
APPROVED=rsc
DELTA=60  (15 added, 26 deleted, 19 changed)
OCL=34206
CL=34208

R=ken
OCL=34205
CL=34207

R=rsc,r
DELTA=4  (3 added, 0 deleted, 1 changed)
OCL=34204
CL=34204

R=rsc
DELTA=186  (181 added, 0 deleted, 5 changed)
OCL=34203
CL=34203

for decoding closures.  There is now no notion of a current OS
thread, though that needs to come back in the form of a
current Go thread.  As a result, Process now implements Peek
and Poke and maps them to any stopped OS thread, since they
all share the address space anyways.

R=rsc
APPROVED=rsc
DELTA=322  (310 added, 3 deleted, 9 changed)
OCL=34136
CL=34201

R=rsc
DELTA=44  (10 added, 30 deleted, 4 changed)
OCL=34195
CL=34200

R=rsc
DELTA=2  (2 added, 0 deleted, 0 changed)
OCL=34196
CL=34199

simplify expr by merging all simple eval functions
into a single eval interface{}.

R=austin
DELTA=1597  (730 added, 780 deleted, 87 changed)
OCL=34182
CL=34198

R=austin
DELTA=1892  (1892 added, 0 deleted, 0 changed)
OCL=34183
CL=34197

Change their names too.

R=rsc
DELTA=206  (123 added, 2 deleted, 81 changed)
OCL=34170
CL=34194

bug197.go:10:5: error: incompatible type in initialization
bug197.go:11:5: error: incompatible type in initialization
bug197.go:12:5: error: incompatible type in initialization
bug197.go:13:5: error: incompatible type in initialization
bug197.go:20:13: error: incompatible types in binary expression
bug197.go:21:27: error: incompatible types in binary expression

R=rsc
DELTA=6  (0 added, 0 deleted, 6 changed)
OCL=34135
CL=34177

R=rsc
DELTA=40  (40 added, 0 deleted, 0 changed)
OCL=34168
CL=34176

R=rsc
DELTA=39  (39 added, 0 deleted, 0 changed)
OCL=34153
CL=34167

R=austin
DELTA=10  (9 added, 0 deleted, 1 changed)
OCL=34163
CL=34166

R=ken
OCL=34164
CL=34164

(per feedback from Austin)

R=rsc
DELTA=7  (0 added, 2 deleted, 5 changed)
OCL=34158
CL=34161

- same capitalization for "Declarations and scope" section as for
  other sections

DELTA=23  (2 added, 1 deleted, 20 changed)
OCL=34131
CL=34156

R=rsc
DELTA=9  (0 added, 0 deleted, 9 changed)
OCL=34148
CL=34151

R=austin
DELTA=448  (447 added, 0 deleted, 1 changed)
OCL=34139
CL=34150

R=rsc
DELTA=1087  (1001 added, 78 deleted, 8 changed)
OCL=34137
CL=34147

rune now unsigned.

R=r
DELTA=10  (1 added, 0 deleted, 9 changed)
OCL=34140
CL=34146

	%E - upper case %e
	%G - upper case %g
	%#v - Go syntax

R=r
DELTA=332  (238 added, 47 deleted, 47 changed)
OCL=34091
CL=34145

R=r
DELTA=85  (85 added, 0 deleted, 0 changed)
OCL=34141
CL=34144

R=austin
DELTA=320  (320 added, 0 deleted, 0 changed)
OCL=33983
CL=34143

R=austin
DELTA=1630  (1630 added, 0 deleted, 0 changed)
OCL=34001
CL=34142

container/list:
  - change Iter to go over the list values

container/ring:
  - add Iter, drop Forward/Backward

container/vector:
  - add channel direction constraints

R=rsc,gri
APPROVED=rsc
DELTA=86  (23 added, 40 deleted, 23 changed)
OCL=33935
CL=34132

(per suggestion from rsc)

R=rsc
DELTA=24  (3 added, 9 deleted, 12 changed)
OCL=34121
CL=34130

utf8 package imports unicode to get those definitions.
regenerate dependencies.

R=rsc
DELTA=41  (19 added, 3 deleted, 19 changed)
OCL=34123
CL=34129

R=austin
DELTA=12  (2 added, 0 deleted, 10 changed)
OCL=34098
CL=34120

R=rsc
DELTA=105  (87 added, 7 deleted, 11 changed)
OCL=34062
CL=34119

R=rsc
DELTA=38  (33 added, 3 deleted, 2 changed)
OCL=34101
CL=34104

if first function in file was dead code, it was being
discarded along with the file name information for that file.
leave the functions in the master function list longer:
let xfol take the dead code out of the code list,
and let span skip the unreachable functions during output.

before
	throw: sys·mapaccess1: key not in map

	panic PC=0x2e7b20
	throw+0x33 /Users/rsc/go/src/pkg/runtime/runtime.c:65
		throw(0x5834f, 0x0)
	sys·mapaccess1+0x73 /Users/rsc/go/src/pkg/runtime/hashmap.c:769
		sys·mapaccess1(0x2b9bd0, 0x0)
	gob·*Encoder·Encode+0x16b /Users/rsc/go/src/pkg/fmt/print.go:2926
		gob·*Encoder·Encode(0x2bb440, 0x0, 0x558b0, 0x0, 0x2e4be0, ...)
	main·walk+0x331 :1603
		main·walk(0x33a480, 0x0)
	main·walk+0x271 :1596
		main·walk(0x300640, 0x0)
	main·walk+0x271 :1596
		main·walk(0x300520, 0x0)
	main·walk+0x271 :1596
		main·walk(0x300240, 0x0)
	main·walk+0x271 :1596
		main·walk(0x678f8, 0x0)
	main·main+0x22 :1610
		main·main()

after
	throw: sys·mapaccess1: key not in map

	panic PC=0x2e7b20
	throw+0x33 /Users/rsc/go/src/pkg/runtime/runtime.c:65
		throw(0x5834f, 0x0)
	sys·mapaccess1+0x73 /Users/rsc/go/src/pkg/runtime/hashmap.c:769
		sys·mapaccess1(0x2b9bd0, 0x0)
	gob·*Encoder·Encode+0x16b /Users/rsc/go/src/pkg/gob/encoder.go:319
		gob·*Encoder·Encode(0x2bb3c0, 0x0, 0x558b0, 0x0, 0x2e4be0, ...)
	main·walk+0x331 /Users/rsc/dir.go:121
		main·walk(0x2f6ab0, 0x0)
	main·walk+0x271 /Users/rsc/dir.go:114
		main·walk(0x301640, 0x0)
	main·walk+0x271 /Users/rsc/dir.go:114
		main·walk(0x301520, 0x0)
	main·walk+0x271 /Users/rsc/dir.go:114
		main·walk(0x301240, 0x0)
	main·walk+0x271 /Users/rsc/dir.go:114
		main·walk(0x678f8, 0x0)
	main·main+0x22 /Users/rsc/dir.go:128
		main·main()
	mainstart+0xe /Users/rsc/go/src/pkg/runtime/amd64/asm.s:55
		mainstart()
	goexit /Users/rsc/go/src/pkg/runtime/proc.c:133
		goexit()

R=r
DELTA=46  (20 added, 25 deleted, 1 changed)
OCL=34094
CL=34103

R=r
DELTA=68  (12 added, 55 deleted, 1 changed)
OCL=34095
CL=34102

x[i]
x not addressable, i >= UINF
double evaluated i
second eval killed live registers

manifested as gob instability

R=ken
OCL=34097
CL=34099

hard to beat at this point, i think.

R=rsc
DELTA=38  (8 added, 21 deleted, 9 changed)
OCL=34092
CL=34096

R=rsc
OCL=34090
CL=34090

tables shrink 900 lines.
mapping code gets a little slower

R=rsc
DELTA=1124  (105 added, 952 deleted, 67 changed)
OCL=34079
CL=34089

R=r
OCL=34087
CL=34087

R=r
APPROVED=r
DELTA=13  (11 added, 0 deleted, 2 changed)
OCL=34081
CL=34081

very large functions.

R=r
OCL=34080
CL=34080