rc1.5 patch

[Scott Schwartz <schwartz@galapagos.cse.psu.edu>]

A while back Byron asked if I had the patch handy for a bug in the
reader that someone noticed.  Sorry for the delay, here's the diff.
This diff also works around a bug in ObjectCenter's understanding of
declarations.  I know of a few other bugs, in the print library, but I
think they are benign.  [The fixes for those are reflected in the
version of the print code that I sent to comp.sources.unix a while
back, if anyone wants to integrate them.  (Yeah, I ought to do it.)]

diff -rc ./footobar.c /home/roke/src/rc1.5/footobar.c
*** ./footobar.c	Sun Mar  6 22:32:55 1994
--- /home/roke/src/rc1.5/footobar.c	Tue Mar 29 23:32:56 1994
***************
*** 9,15 ****
  
  #ifdef PROTECT_ENV
  static bool Fconv(Format *f, int ignore) {
! 	unsigned const char *s = va_arg(f->args, unsigned const char *);
  	int c;
  
  	while ((c = *s++) != '\0')
--- 9,15 ----
  
  #ifdef PROTECT_ENV
  static bool Fconv(Format *f, int ignore) {
! 	const unsigned char *s = va_arg(f->args, const unsigned char *);
  	int c;
  
  	while ((c = *s++) != '\0')
diff -rc ./input.c /home/roke/src/rc1.5/input.c
*** ./input.c	Sun Mar  6 22:33:03 1994
--- /home/roke/src/rc1.5/input.c	Tue Apr  5 16:45:46 1994
***************
*** 140,145 ****
--- 140,147 ----
  				long /*ssize_t*/ r = rc_read(istack->fd, inbuf + 2, BUFSIZE);
  				sigchk();
  				if (r < 0) {
+ 					if (errno == EINTR) /*retry interrupted read*/
+ 						continue;
  					uerror("read");
  					rc_exit(1);
  				}
diff -rc ./print.c /home/roke/src/rc1.5/print.c
*** ./print.c	Sun Mar  6 22:33:10 1994
--- /home/roke/src/rc1.5/print.c	Tue Mar 29 23:33:24 1994
***************
*** 240,246 ****
   */
  
  extern int printfmt(Format *format, const char *fmt) {
! 	unsigned const char *s = (unsigned const char *) fmt;
  
  	if (fmttab[0] == NULL)
  		inittab();
--- 240,246 ----
   */
  
  extern int printfmt(Format *format, const char *fmt) {
! 	const unsigned char *s = (const unsigned char *) fmt;
  
  	if (fmttab[0] == NULL)
  		inittab();