Machine and compiler-dependent definitions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Subdirectories:
---------------
    i386-linux-g++       linux-only things
    i386-freebsd-g++     freebsd-only things
    i386-win32-ic        win32, with Intel compiler (library won't
			  compile with MSVC because it does not support
			  even partial template specialization)

    i386-g++             common things for i386 platforms with GCC
    sparc-sunos-forte	 solaris-only things

Files in subdirectories:

    types.h         basic types (int8, int16, etc)
    math_defs.h     math definitions: {is,set}undef, NaN stuff etc.
    (will be more)
