[Ohrrpgce] SVN: teeemcee/11806 scons: cleanup; identify gcc/clang from "cc -v" version info instead of

[subversion at HamsterRepublic.com]

teeemcee
2020-05-10 01:10:12 -0700 (Sun, 10 May 2020)
189
scons: cleanup; identify gcc/clang from "cc -v" version info instead of checking path

CC and GCC are now ToolInfo instances instead of strings. Helps to reduce the
huge numbers of globals.
---
U   wip/SConscript
U   wip/ohrbuild.py