Remove vestigial hacks around non-Linux struct sigactions

* signal.c: Stop using __sighandler_t glibc'ism. Remove SA_HANDLER macro.
Explain why we can't use "sa_handler" as a field name.
(sys_sigaction): Use __sa_handler instead of SA_HANDLER macro.
(sys_rt_sigaction): Likewise.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
1 file changed