configure: add noexecstack to linker options if supported.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
(cherry picked from commit b7082d95)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

configure

@@ -4528,6 +4528,7 @@ EOF
 fi
 
 check_ldflags -Wl,--as-needed
+check_ldflags -Wl,-z,noexecstack
 
 if check_func dlopen; then
     ldl=