**/Makefile.kmk: Cosmetic changes.
tar: --hard-dereference => --dereference
tar: dereference hard links
Grumble: _2_STAGE_TARGET -> _2_STAGE_TARGETS.
INSTARGET -> [12]_STAGE_TARGET.
*.kmk: Installation/staging adjustments (kBuild 0.2.0 preps).
Added VBOX_GTAR variable, fixing solaris build issue.
VBoxKeyboard/Makefile.kmk: Use if1of instead of filter-out.
VBoxKeyboard: FreeBSD build fix
FE/Qt and Common: move the X11 keyboard library out of the GUI