For the global variables defined in winglobals.c, remove duplicate extern
declarations from the beginning of various .c files, and move most of them
into a new header file, winglobals.h
Leave some clipboard related variables alone for the moment, they need treating
more carefully, to avoid mixing client and server type definitions.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Colin Harrison <colin.harrison@virgin.net>
