the bash scripts and makefiles for building go didn't take into account
the fact $GOROOT / $GOBIN could both be directories containing whitespaces,
and was not possible to build it in such a situation.
this commit adjusts the various makefiles/scripts to make it aware of that
possibility, and now it builds successfully when using a path with whitespaces
as well.
Fixes#115.
R=rsc, dsymonds1
https://golang.org/cl/157067
use libbio instead of maintaining own buffer
libbio:
always use vlong offsets; die if off_t is too small
R=r
DELTA=163 (23 added, 63 deleted, 77 changed)
OCL=17508
CL=17512
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
