Log Message:
Update to 0.76

Upstream changes:
Changes for version 4.76
add autoconf test for siginfo_t, which is, of course, not available on windows \ 
(reported by Peter Petky).
disable syscalls on solaris, as perl seems to provide an incompatible syscall \ 
prototype that clashes with sys/syscall.h.
add MAP_FIXED_NOREPLACE, MAP_SHARED_VALIDATE, MAP_SYNC and MAP_UNINITIALIZED.