Don't force the -lgcc_s use with Clang. Just expect the system is new
enough to have properly linked C++ runtime.
Don't use -fcheck-new. With exceptions, it won't happen anyway and even
without, malloc() is unlikely to ever fail.
Don't use -frename-registers or play with the inline limits.
Expect the compiler to know when to inline functions used only once.
Don't play with the inline settings.
Use normal optimiser settings, most of the manual overrides are the
default anyway.
Use saner default optimizer flags.
When extracting rpath options from the Fortran linker, prefix them with
-Wl before passing them back to CC.
Don't use -fno-reorder-blocks.
Remove flags that have been GCC's since ~forever.
Remove -fno-defer-pop -fcaller-saves -fno-inline, which are workarounds
for various ancient GCC versions.
Don't use -fno-defer-pop.
Install LaTeX files into share/texmf-dist, not share/texmf.

The latter has been deprecated in TeX Live 2013.
Note PKGREVISION bump of eukleides.