(renamed to avoid any conflict with old p4 copies).

this approach doesn't require auto-generating
files also kept in p4, so it should be easier on
go users who don't sync very often.

this approach will be more work for go developers:
builtin.c needs to be copied to builtin.c.boot in p4
as new functions are added.  mkbuiltin does this
for certain $USERs to help us remember.

R=r
DELTA=343  (176 added, 162 deleted, 5 changed)
OCL=25803
CL=25805

R=rsc
DELTA=25  (25 added, 0 deleted, 0 changed)
OCL=25798
CL=25802

- removed any symbol table stuff
- some interface cleanup
- removed lot's of dead wood
- half the support for type switches (simple form)
- name capitalization
Several rounds to come.

R=r
OCL=25797
CL=25797

R=rsc
DELTA=9  (4 added, 0 deleted, 5 changed)
OCL=25793
CL=25795

R=ken
OCL=25787
CL=25791

in preparation of type switch.
no functional change (yet).

R=r
OCL=25784
CL=25788

R=r
DELTA=368  (87 added, 14 deleted, 267 changed)
OCL=25773
CL=25786

R=r
DELTA=110  (64 added, 19 deleted, 27 changed)
OCL=25761
CL=25782

R=r
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=25732
CL=25777

R=r
DELTA=50  (28 added, 0 deleted, 22 changed)
OCL=25763
CL=25770

deletion beats documentation for deprecation.

R=rsc,gri
DELTA=509  (2 added, 490 deleted, 17 changed)
OCL=25737
CL=25768

R=r
DELTA=173  (74 added, 14 deleted, 85 changed)
OCL=25753
CL=25767

R=rsc
DELTA=36  (30 added, 0 deleted, 6 changed)
OCL=25740
CL=25766

R=rsc
DELTA=26  (17 added, 1 deleted, 8 changed)
OCL=25731
CL=25734

also write to stderr not stdout

R=rsc
DELTA=48  (38 added, 2 deleted, 8 changed)
OCL=25729
CL=25733

R=rsc
OCL=25730
CL=25730

R=gri
DELTA=3  (0 added, 1 deleted, 2 changed)
OCL=25728
CL=25728

R=r
DELTA=63  (57 added, 1 deleted, 5 changed)
OCL=25727
CL=25727

add commentary.

R=rsc
DELTA=231  (41 added, 24 deleted, 166 changed)
OCL=25724
CL=25726

say a little more about package main.

R=rsc
DELTA=7  (4 added, 0 deleted, 3 changed)
OCL=25725
CL=25725

R=ken
OCL=25720
CL=25720

TBR=gri
OCL=25719
CL=25719

Major ones:
* Be consistent: "numeric type" and "arithmetic operator".
* if/swtch take "simple statement" not "short variable declaration".
* There was a comment that implied for x,y := range z() might
  evaluate z() multiple times.  I deleted it.

R=r,gri
DELTA=124  (24 added, 4 deleted, 96 changed)
OCL=25706
CL=25715

R=r
OCL=25714
CL=25714

- move scanner to into lib/lang
- added test
- adjusted various make and build files

R=r
DELTA=1731  (973 added, 753 deleted, 5 changed)
OCL=25668
CL=25713

R=ken
OCL=25705
CL=25705

fix grammar for forward declaration of interface, struct.

move array down next to slice.

fix type equal example for structs.

R=r,gri
DELTA=247  (122 added, 114 deleted, 11 changed)
OCL=25694
CL=25704

- separated out token definition from scanner
- cleaned up token and scanner implementation
- added comments to exported interfaces

R=r
OCL=25665
CL=25665

R=rsc
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=25652
CL=25656

R=rsc
DELTA=5  (0 added, 0 deleted, 5 changed)
OCL=25651
CL=25655

R=rsc
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=25648
CL=25654

- require ()'s around composite literals at the if/for/switch control clause level
- fixed a nasty bug: passing a value instead of a pointer to a value to an interface
  variable - and not noticing that the value is copied

R=r
OCL=25649
CL=25649

(i.e., the status quo with braces in composite literals).

DELTA=20  (16 added, 0 deleted, 4 changed)
OCL=25640
CL=25646

R=ken
DELTA=131  (60 added, 41 deleted, 30 changed)
OCL=25617
CL=25633

plus significant hand editing.

Back to T{x} for composite literals.

R=r
OCL=25612
CL=25632

allow conversions between equal types.

R=r
DELTA=15  (4 added, 4 deleted, 7 changed)
OCL=25618
CL=25630

- removed unneeded code that accumulated over time
- change src from string to []byte (perhaps should be io.Read
but that has some other disadvantages)
- simplified interface

R=r
OCL=25615
CL=25615

R=rsc
OCL=25614
CL=25614

R=rsc
DELTA=41  (9 added, 4 deleted, 28 changed)
OCL=25611
CL=25611

- more test cases

R=rsc
DELTA=97  (52 added, 4 deleted, 41 changed)
OCL=25585
CL=25607