Allow specifying only one of width and height in per-app settings size

[chaz/openbox] / themes / Bear2 / openbox-3 / max.xbm

#define max_width 8
#define max_height 8
static unsigned char max_bits[] = {
   0xff, 0xff, 0x81, 0x81, 0x81, 0x81, 0x81, 0xff };