Fixed includes to header files that were renamed, added defines for
ia32_fminf and ia32_fmaxf in sysdep.h, and added declarations for the
same in ia32.h
This was SVN commit r3752.
snd_mgr: replace al_check("funcname") with AL_CHECK macro; allow
disabling WIN_LOADLIBRARY_HACK.
wcpu: move sys_on_each_cpu here from wsysdep
split up wdetect into wgfx, wsnd, wdll_ver
This was SVN commit r3748.