wscreensaver: configure glmatrix
wscreensaver: configure glmatrix

Since I have commented out all the config structures in glmatrix.c, it
was not getting proper default values. Hardcode some default there.

Remove glClear from reshape_matrix(), as wscreensaver does not support
rendering commands in reshape call.

Signed-off-by: Pekka Paalanen <6c0263d81461c956d504307112a4ce25eaacc3d1@gmail.com>

krezovic/weston,kwm81/weston,xorgy/weston,jonnylamb/weston,eyolfson/weston,Gnurou/weston,jonnylamb/weston,Tarnyko/weston-xdg_surface_present,udoprog/weston,mchalupa/weston,eyolfson/weston,Fantu/compositor-spice,mchalupa/weston,krezovic/weston,giucam/weston,sir-murray/weston,xorgy/weston,Gnurou/weston,sir-murray/weston,Fantu/compositor-spice,Tarnyko/weston-xdg_surface_present,giucam/weston,Fantu/compositor-spice,kwm81/weston,udoprog/weston