Additionally removes some dead code and fixes double-locking in
xprIsX11Window. xprIsX11Window doesn't need to do any locking because
those resources are protected by the called functions themselves.
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Daniel A. Steffen <dsteffen@apple.com>
General code cleanup, whitespace, dead code removal, added missing prototypes.
Made Xquartz come to foreground later in startup, so it doesn't appear for Xquartz -version
(cherry picked from commit 36922e8ff4316c93843aa3fe959cf8df3c7d5892)
Leaving xpr unflattened since we want modularity to replace that with xpc (XPluginComposite) at some point
(cherry picked from commit 48e6a75fbdd0fee86e364f02ace83f20b312a2b2)