Copies the code to initialize and destroy an XkbDescRec from libX11. The
original code is in
libX11/src/xkb/XKBAlloc.c
libX11/src/xkb/XKBGAlloc.c
libX11/src/xkb/XKBMAlloc.c
Switched to the common XKB headers which don't contain Xlib pollution.
A new common keyboard description type, XkbcDescRec, has been added.
This is the XkbDescRec definitions in xkbstr.h in the xserver since it
contains the defined field we'll need.
Add the xkbcommon implementations of XKeysymToString and XStringToKeysym.
These symbols have the namespace prefix of Xkbc and are declared in
X11/XkbCommon.h.
The implementation is taken directly from Xlib, but does not include the
XKeysymDB parsing and hashing yet (if it ever will). A couple type
conversions were needed to keep from using Xlib.h. See original files:
libX11/src/KeysymStr.c
libX11/src/StrKeysym.c
Dan Nicholson