(this time i ran g4 nothave)

TBR=r
OCL=29156
CL=29156

TBR=dsymonds
OCL=29155
CL=29155

must have non-nil i.

R=ken
OCL=29136
CL=29136

* new package hash defining interfaces Hash and Hash32.
* adler32 and crc32 return Hash32 instead of specific types.
* adler32 and crc32 provide non-allocating methods for single slices.
* sha1 and md5 move to crypto, return Hash.
* sum.go, a simple test program, moves to /usr/rsc.
* refresh Make.deps

R=r
DELTA=1908  (935 added, 923 deleted, 50 changed)
OCL=29095
CL=29135

in x.(T) x cannot be a nil (uninitialized) interface variable.

remove TODO per discussion.

DELTA=3  (1 added, 1 deleted, 1 changed)
OCL=29123
CL=29134

- format.go implementation complete
- lots of documentation added (not quite complete)

TBR=r
OCL=29130
CL=29130

R=r
DELTA=250  (250 added, 0 deleted, 0 changed)
OCL=29120
CL=29127

as far as I can tell there's no reason not to.

the Nillable test was succeeding because NewZeroValue
returned the nil interface value and the type guard
was letting it through.  the only change in the test is
more detail in the print.

R=r
DELTA=8  (0 added, 7 deleted, 1 changed)
OCL=29124
CL=29126

that came from two different enums.
spilt into ifacecvt and ifaceop depending
on which enum the argument is.

R=ken
OCL=29122
CL=29122

this is not a user-visible change.

before, all interface values were

	struct Itype {
		Sigt *type;
		Sigi *inter;
		void *method[n];
	}

	struct Iface {
		void *addr;
		Itype *itype;
	}

the itype is basically a vtable, but it's unnecessary
if the static type is interface{ }.
for interface values with static type empty, the
new representation is

	struct Eface {
		void *addr;
		Sigt *type;
	}

this complicates the code somewhat, but
it reduces the number of Itypes that
have to be computed and cached,
it opens up opportunities to avoid function
calls in a few common cases,
and it will make it possible to lay out
interface{} values at compile time,
which i think i'll need for the new reflection.

R=ken
OCL=28701
CL=29121

do not update lineno from ONAME nodes,
	because they have declaration lineno not use.
show actual name in top-level statement error.

before
runtime.a:7: x.go:5: walkstate: NAME not a top level statement

after
x.go:14: walkstate: runtime.Goexit not a top level statement

R=ken
OCL=29113
CL=29116

rename place-holder to _place_holder_ so it can be avoided.

R=r
DELTA=5  (2 added, 2 deleted, 1 changed)
OCL=29093
CL=29097

(new rules on type compatibility cover this already)

DELTA=2  (0 added, 2 deleted, 0 changed)
OCL=29094
CL=29096

DELTA=63  (27 added, 6 deleted, 30 changed)
OCL=29065
CL=29091

R=r
DELTA=5  (4 added, 0 deleted, 1 changed)
OCL=29088
CL=29090

deps.bash tweak.

R=r
DELTA=95  (95 added, 0 deleted, 0 changed)
OCL=29046
CL=29059

R=r
DELTA=791  (779 added, 0 deleted, 12 changed)
OCL=29045
CL=29058

bug117.go:13:12: error: reference to undefined field or method

import1.go:9:2: error: redefinition of '.main.bufio'
import1.go:8:2: note: previous definition of '.main.bufio' was here
import1.go:9:2: error: incompatible imported type 'bufio.Error'

interface9.go:25:5: error: incompatible types in assignment (method P requires a pointer)
interface9.go:30:5: error: incompatible types in assignment (method P requires a pointer)

R=rsc
DELTA=5  (0 added, 0 deleted, 5 changed)
OCL=29044
CL=29055

R=dsymonds
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=29048
CL=29053

R=r
DELTA=643  (643 added, 0 deleted, 0 changed)
OCL=29017
CL=29047

Not ready to link into build yet.

Delta says 1272 lines but only 474
if you subtract the test files,
which are mostly data.

R=r
DELTA=1252  (1249 added, 0 deleted, 3 changed)
OCL=29013
CL=29037

R=r
OCL=29036
CL=29036

R=r
DELTA=18  (10 added, 4 deleted, 4 changed)
OCL=29000
CL=29034

R=r
OCL=29016
CL=29016

It caught a few missing dependencies (bufio/fmt -> utf8, fmt -> os, http -> strconv, etc.).

R=r,rsc
APPROVED=r
DELTA=126  (79 added, 45 deleted, 2 changed)
OCL=28983
CL=29014

TBR=rsc
OCL=29010
CL=29010

R=rsc
DELTA=11  (10 added, 0 deleted, 1 changed)
OCL=29007
CL=29009

R=dsymonds,rsc
APPROVED=rsc
DELTA=88  (53 added, 17 deleted, 18 changed)
OCL=28452
CL=29008

The higher-level stream modes will be in crypto/block.

R=r
DELTA=205  (136 added, 7 deleted, 62 changed)
OCL=29002
CL=29006

- added IsValid predicate to token.Position
- updated pretty, godoc, gobuild
- updated/expanded test cases

R=rsc
DELTA=265  (97 added, 78 deleted, 90 changed)
OCL=28961
CL=29005

R=iant
DELTA=3  (2 added, 0 deleted, 1 changed)
OCL=28994
CL=29003

add testing/iotest package.
make bufio return error on short write.

R=r
DELTA=423  (208 added, 154 deleted, 61 changed)
OCL=28997
CL=28999

fixed bug in seeding. top 11 bits were
not changed by different seeds.

R=r
OCL=28998
CL=28998

R=r
DELTA=15  (7 added, 1 deleted, 7 changed)
OCL=28996
CL=28996

R=r
DELTA=215  (186 added, 0 deleted, 29 changed)
OCL=28968
CL=28995

structs and arrays are done
slices and maps are yet to do

R=r
OCL=28977
CL=28977

os.Exit(0) at the end of main.

R=rsc
DELTA=6  (0 added, 6 deleted, 0 changed)
OCL=28967
CL=28969

structure set up - no change yet

R=r
OCL=28966
CL=28966

(mimic behavior of slices)

R=r
DELTA=12  (12 added, 0 deleted, 0 changed)
OCL=28960
CL=28962

TBR=r
DELTA=9270  (0 added, 9270 deleted, 0 changed)
OCL=28958
CL=28958