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
isolated sources of random values.
Add normal and exponential distributions.
Add some tests for the normal and exponential distributions.
R=rsc
APPROVED=rsc
DELTA=1005 (904 added, 80 deleted, 21 changed)
OCL=35501
CL=35779