- adjusted lang doc

R=r
DELTA=192  (26 added, 65 deleted, 101 changed)
OCL=13844
CL=13848

* kick off new os procs (machs) as needed
* add sys·sleep for testing
* add Lock, Rendez
* properly lock mal, sys·newproc, scheduler
* linux syscall arg #4 is in R10, not CX
* chans are not multithread-safe yet
* multithreading disabled by default;
  set $gomaxprocs=2 (or 1000) to turn it on

This should build on OS X but may not.
Rob and I will fix soon after submitting.

TBR=r
OCL=13784
CL=13842

R=rsc
OCL=13840
CL=13840

- deprecate old syntax in this front-end (use -6g for compatibility)

R=r
OCL=13831
CL=13833

R=gri
OCL=13819
CL=13819

R=r
OCL=13816
CL=13816

R=r
DELTA=16  (10 added, 4 deleted, 2 changed)
OCL=13815
CL=13815

- use new export syntax

R=r
OCL=13807
CL=13807

TBR=rsc
OCL=13804
CL=13804

R=r
DELTA=339  (339 added, 0 deleted, 0 changed)
OCL=13786
CL=13794

This makes it easy to build with other flags
(like -ggdb) or other compilers (like cc64).

R=r
DELTA=45  (6 added, 22 deleted, 17 changed)
OCL=13790
CL=13793

var, const and type declarations.

R=r
DELTA=49  (12 added, 28 deleted, 9 changed)
OCL=13791
CL=13791

these guys really really want long to be 32-bits,
so ,s/long/int32/ (and then manual fixup).
still passes all tests.

(i started out looking for just those longs that
needed to be int32 instead, and it was just too hard
to track them down one by one.)

the longs were rare enough that i don't think
it will cause integration problems.

R=ken
OCL=13787
CL=13789

R=r
DELTA=1  (1 added, 0 deleted, 0 changed)
OCL=13785
CL=13785

R=r
DELTA=4  (2 added, 2 deleted, 0 changed)
OCL=13775
CL=13779

	* rename select (very loaded word) nextgoroutine
	* separate out "enter scheduler" (sys·gosched)
	  from the scheduler itself (scheduler)

R=r
APPROVED=r
DELTA=36  (17 added, 15 deleted, 4 changed)
OCL=13772
CL=13774

R=gri
OCL=13766
CL=13766

R=r
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=13765
CL=13765

R=gri
OCL=13741
CL=13741

R=r
OCL=13736
CL=13738

  be canonicalized upon import)
- missed some exports

R=r
OCL=13733
CL=13733

- no need to import/export predeclared types
- fix for receiver types
- cleanups
- added tests to Makefile

R=r
OCL=13728
CL=13730

R=r
OCL=13723
CL=13723

R=r
OCL=13695
CL=13695

  (first step towards cleaner package handling)
- check that map, function, and channel vars are pointers

R=r
OCL=13690
CL=13690

- keep track of type alias (type T1 T0) so we can print the proper type name

R=r
OCL=13688
CL=13688

R=r
OCL=13681
CL=13681

- better debugging support
- removed dead code

R=r
OCL=13680
CL=13680

- missing return in import code
- proper propagation of flags to various components
- better error message when source position is missing
- cleanups

R=r
OCL=13676
CL=13676

R=r
OCL=13666
CL=13666

- add unlink, creat
- add constants for open
- fix some comments

R=gri
OCL=13654
CL=13656

R=r
OCL=13646
CL=13646

R=r
OCL=13640
CL=13640

- almost back to where I was in C++, but now all in Go

R=r
OCL=13627
CL=13627

fix a register name

R=gri
OCL=13548
CL=13548

R=gri
OCL=13547
CL=13547

R=gri
OCL=13546
CL=13546

R=gri
OCL=13545
CL=13545

- some comments added to bug cases
- added notes

R=r
OCL=13543
CL=13543

R=gri
OCL=13526
CL=13526