[Ohrrpgce] SVN: teeemcee/11819 scons: fix nightly builds

[subversion at HamsterRepublic.com]

teeemcee
2020-05-12 22:01:42 -0700 (Tue, 12 May 2020)
147
scons: fix nightly builds

Try first gcc and g++, and then fallback to cc and c++ if those are missing.

GCC is now an alias for FBCC envvar again.
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U   wip/SConscript
U   wip/ohrbuild.py