#i123817# remove workaround obsoleted by the boost-1.55 update

boost>=1.49 fixes the quirks of unordered containers for compilers
that don't support rvalue references
123723: correct sorting of XML token list
#i122208# the std::isfinite() workaround is only needed for GCC

and not for Clang (even if it quite compatible with GCC).
Also clang doesn't support GCC's __builtin_isfinite() function.
#i123951# fix CoreText justification of an all-whitespace text
#i122195# extend macosx gbuild makefile for clang-compiler
#i123951# remove aqua/salfontutils.hxx header

which is and was unused by by both CoreText and ATSUI