[xemacs-hg @ 2005-01-26 10:33:40 by ben] Fix some race conditions in redisplay/signal redisplay.c, redisplay.h, signal.c: Move backtraces to internals manual. Fix some race conditions leading to crashes due to incomplete protection of critical sections. In signal.c, be more aggressive in catching incomplete critical section protection -- we cannot even check for QUIT, *EVER*, in a critical section.

#define drop_width 16
#define drop_height 16
#define drop_x_hot 6
#define drop_y_hot 4
static unsigned char drop_bits[] = {
   0x00, 0x00, 0xfe, 0x07, 0x02, 0x04, 0x02, 0x04, 0x42, 0x04, 0xc2, 0x04,
   0xc2, 0x05, 0xc2, 0x07, 0xc2, 0x07, 0xc2, 0x0f, 0xfe, 0x1f, 0xc0, 0x07,
   0xc0, 0x06, 0x00, 0x0c, 0x00, 0x1c, 0x00, 0x08};