next cl will update names and add to build

R=rsc
DELTA=1876  (938 added, 938 deleted, 0 changed)
OCL=17149
CL=17166

R=ken
OCL=17164
CL=17164

- accepts all Go code (use -s flag)
- complete rewrite of AST, AST building, and printing
  (as a result much more compact)
- printing severely screwed up at the moment, but should be
  fully working in 1 more day

R=r
DELTA=2118  (514 added, 980 deleted, 624 changed)
OCL=17161
CL=17161

fix some bugs in () ordering and rune processing

R=rsc
DELTA=72  (27 added, 5 deleted, 40 changed)
OCL=17147
CL=17147

R=ken
OCL=17141
CL=17143

R=rsc
DELTA=21  (0 added, 21 deleted, 0 changed)
OCL=17123
CL=17136

clean up interface equality hack

still needs more tests; checking in for gccgo testing

R=rsc
DELTA=304  (261 added, 14 deleted, 29 changed)
OCL=17128
CL=17135

R=r
OCL=17134
CL=17134

R=r
OCL=17116
CL=17118

R=r
OCL=17096
CL=17096

R=r
OCL=17063
CL=17063

R=rsc
DELTA=12  (12 added, 0 deleted, 0 changed)
OCL=16989
CL=16998

allocate into an array for easier scanning and printing.

R=rsc
DELTA=282  (193 added, 44 deleted, 45 changed)
OCL=16955
CL=16955

update printing.

R=rsc
DELTA=194  (60 added, 41 deleted, 93 changed)
OCL=16942
CL=16945

(seems not controversial)

R=r
DELTA=8  (3 added, 2 deleted, 3 changed)
OCL=16940
CL=16940

R=r
OCL=16938
CL=16938

(no effect on the test, but now parseable)

R=r
OCL=16936
CL=16936

R=ken
OCL=16935
CL=16935

  if in a if, for, or switch header, must be parenthesized
- implemented string concatenation
- simplified a lot of code
- added many more tests: can now parse all *.go files I got my hands on
- printing output currently broken in some cases, use with -s (silent) option

R=r
OCL=16932
CL=16934

R=r
OCL=16929
CL=16929

R=rsc
DELTA=2  (0 added, 2 deleted, 0 changed)
OCL=16927
CL=16927

(for instance *p was not allowed on the left side of "="). Changed
to Expression everywhere (this is too liberal, UnaryExpr is probably
good enough, but it seems funny, and we need to check semantically
anyway). This matches 6g yacc.
- Write expression syntac recursively to express evaluation order
and precedence syntactically.
- Organized open issues list, folded in stuff from todo.txt which
is now obsolete.

R=r
DELTA=108  (41 added, 52 deleted, 15 changed)
OCL=16903
CL=16910

delete unused This() in preparation for removing linking via array indexes

R=rsc
DELTA=26  (2 added, 23 deleted, 1 changed)
OCL=16895
CL=16909

- more precise wording by having an explicit list of cases
- simplified statement list

R=r
DELTA=16  (10 added, 0 deleted, 6 changed)
OCL=16871
CL=16875

will move elsewhere when more complete.
parses, does not execute.
no character classes yet.

R=rsc
DELTA=522  (522 added, 0 deleted, 0 changed)
OCL=16863
CL=16874

R=r
OCL=16869
CL=16869

- language for selectors and array/map indices
- formal description of syntax notation used
- factor out common productions to better show
  symmetries in grammar

R=r
DELTA=113  (77 added, 13 deleted, 23 changed)
OCL=16853
CL=16865

R=rsc
APPROVED=rsc
DELTA=21  (21 added, 0 deleted, 0 changed)
OCL=16794
CL=16803

except in statement list, where it is expressed in words
- allow for empty import, const, type, and var decl lists inside ()'s
- fixed grammar for inc/dec statements
- added empty statement as it appears to be accepted by 6g

R=r
DELTA=75  (23 added, 21 deleted, 31 changed)
OCL=16785
CL=16785

R=gri
DELTA=8  (8 added, 0 deleted, 0 changed)
OCL=16765
CL=16767

suggested by rob (could make programs generating
go easier to write).

R=ken
DELTA=13  (13 added, 0 deleted, 0 changed)
OCL=16766
CL=16766

R=r
OCL=16720
CL=16728

R=r
OCL=16721
CL=16727

R=r
DELTA=6  (6 added, 0 deleted, 0 changed)
OCL=16726
CL=16726

R=rsc
APPROVED=rsc
DELTA=50  (4 added, 0 deleted, 46 changed)
OCL=16707
CL=16725

	- pointer to interface cannot have methods
	- record type names for better runtime error

R=r,ken
DELTA=85  (80 added, 0 deleted, 5 changed)
OCL=16658
CL=16722

R=r
OCL=16698
CL=16698

the parser accepts a bit more then it should)

R=r
OCL=16694
CL=16694

R=rsc
APPROVED=rsc
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=16688
CL=16690

- forward decls for interface and struct types
- complete & incomplete types
- optional semicolons

R=r
DELTA=216  (95 added, 15 deleted, 106 changed)
OCL=16465
CL=16687