re-add support for WM_TAKE_FOCUS, and additionally this time only call
XSetInputFocus() for clients that have the InputHint; latter fix
discovered by Valery Masiutsin with a PoC patch - solves keyboard input
focus loss for java apps.
Initial commit
Ignore build droppings.
Initial working Linux build.

I've added GNUmakefile rather modify Makefile to simplify future
merges.  GNU Make prefers files named GNUmakefile to ones named
Makefile so no additional command line arguments are necessary
when building on Linux with GNU Make.
Add cvs-authors file used for initial import.

Be sure to copy this file to .git/cvs-authors before running
git-cvsimport.  When new users commit changes upstream this file
will need to be manually updated before running git-cvsimport.
Document recommended way to sync with upstream.
Sort cvs-authors by username.
Fix copy-pasto in user's last name.
Sync copyright header with upstream.
Sync with latest upstream changes.

Merge branch 'linux-port'