use setenv/unsetenv instead of putenv, cuz they are not ugly and confusing wrt memory...

[chaz/openbox] / data / xbm / desk.xbm

#define desk_width 6
#define desk_height 6
static unsigned char desk_bits[] = {
   0x33, 0x33, 0x00, 0x00, 0x33, 0x33 };