Use test -r instead of test -e for solaris. Fixes bug #4253.

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

#define max_width 6
#define max_height 6
static unsigned char max_bits[] = {
   0x3e, 0x22, 0x2f, 0x29, 0x39, 0x0f };