devel/t1lib: fix dependencies, parallel build.

If the X11 is on, xglyph and libt1x directly depend on various X libs.
These dependencies are missing from USE_XORG (noticed by stage-qa).
If any of those missing dependencies are removed, t1lib will break.
Relying on indirect dependencies is insufficient since those dependencies can change on their own.

PR: 236640
Submitted by: jcfyecrayz@liamekaens.com