New module sigaction, for mingw. * modules/sigaction: New module... * modules/sigaction-tests: ...and its test. * m4/sigaction.m4: New file. * lib/sigaction.c: Likewise. * tests/test-sigaction.c: Likewise. * m4/signal_h.m4 (gl_SIGNAL_H_DEFAULTS): Add sigaction variables. * modules/signal (Makefile.am): Likewise. * lib/signal.in.h (!@HAVE_SIGACTION@): Define replacements when needed. * doc/posix-headers/signal.texi (signal.h): Mention provided types. * doc/posix-functions/siginterrupt.texi (siginterrupt): Mention that sigaction is preferable. * doc/posix-functions/sigaction.texi (sigaction): Mention new module. * MODULES.html.sh (Support for systems lacking POSIX:2001): Add sigaction. Signed-off-by: Eric Blake <ebb9@byu.net>

--- a/MODULES.html.sh	Sat Jun 21 07:06:28 2008 -0600
+++ b/MODULES.html.sh	Sat Jun 21 14:32:55 2008 -0600
@@ -2131,6 +2131,7 @@
   func_module rename
   func_module rmdir
   func_module search
+  func_module sigaction
   func_module sigprocmask
   func_module socklen
   func_module ssize_t