bug#9169: gnulib import for MacOS, Irix, Solaris, etc.

[Paul Eggert]

On 07/29/11 19:17, Chong Yidong wrote:

> Does this patch fix any real bugs, or just hypothetical ones?

It fixes these bugs:

* On FreeBSD 6.4, HP-UX 11.31, and Solaris 9, and when Emacs is
  configured not to use gtk or any other thread-using library,
  signals aren't blocked correctly.

* On IRIX 6.5 it fixes an unwanted clash between Emacs's
  and IRIX's signal handling.

* On Cygwin 1.7.5 it works around an incompatibility with
  the system pthread_sigmask.

* On MacOS X 10.5 (32-bit), files whose inode numbers
  exceed 2**31 cannot be read or manipulated.

I haven't observed any of these bugs personally, since I don't
use any of these platforms.  However, these bugs have been
reported for other gnulib use, and I'm confident they
can be reproduced in Emacs on the appropriate platform.