This way the shell can know when a surface has been unmapped by
checking the value returned by weston_surface_is_mapped(surface).
The configure handlers have now width and height parameters, so
they do not need anymore to check manually the buffer size.
If a surface's buffer is NULL the width and height passed to the
configure are both 0.
Configure is now only called after an attach. The variable
weston_surface.pending.newly_attached is set to 1 on attach, and
after the configure call is reset to 0.
The weston test extension, called weston-test.so, can be loaded
from the "modules" configuration option on the command line
or in the .ini file.
Clients can bind to the "wl_test" interface to interact with
the weston test extension.
Signed-off-by: U. Artie Eoff <ullysses.a.eoff@intel.com>