Figure out where to install-libs

Working towards getting crosstools working to build our cross compiler,
they use the sysroot-style installation.  We need to install our libs in
a different place depending on which style we are using.
Commit generated file to remove error/warning

This file eventually gets generated and the CXX build process completes,
but during the build we see a bunch of errors because it gets generated
too late (or something).  Its all black magic in the corss compiler
build....  We should probably revisit this at some point though.