PR target/35485
        * configure.ac: AIX threads are Posix threads.
        Set signal handler to aix-signal.h
        * configure: Regenerate.
        * classpath/native/fdlibm/fdlibm.h: Undef hz.
        * include/aix-signal.h: New file.
        * sysdep/powerpc/locks.h: Avoid GNU Assembler syntax.

From-SVN: r141335