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
new script "quietgcc" installed in $HOME/bin during make.bash
runs gcc with warnings, turns off inappropriate ones,
greps out useless output.
quietgcc also makes sure to run the correct 64-bit gcc.
R=r
DELTA=38 (36 added, 0 deleted, 2 changed)
OCL=17493
CL=19599
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