xkbcomp was using Xlib's XConvertCase to check upper/lowercase. That's a
lot of code, so hopefully the xkbfile macros using _XkbKSCheckCase are
good enough. This also required that <X11/keysym.h> is included to get
all the XK_* definitions.
Added common variants of XkbComputeEffectiveMap, XkbInitCanonicalKeyTypes
and all their needed functions. A couple functions that were in alloc.c
moved to malloc.c to mirror the libX11 sources better.
Original code in
libX11/src/xkb/XKBMalloc.c
libX11/src/xkb/XKBMisc.c
libX11/src/xkb/XKB.c
Dan Nicholson