remove io.ErrEOF.
rename io.FullRead to io.ReadFull, to match
ReadAtLeast and ReadAll.
remove io.FullReader, because it is now unused.
R=r
DELTA=295 (88 added, 105 deleted, 102 changed)
OCL=30544
CL=30588
* use 64-bit file system calls (Linux, Darwin)
* use 32-bit [sic] uid/gid calls (Linux)
* fix sockets on Linux
Darwin/386 works again.
Linux/386 is better but must never have worked;
there are still bugs surrounding the creation of new
threads in the runtime package.
R=austin
DELTA=1332 (673 added, 614 deleted, 45 changed)
OCL=30327
CL=30380
