* configure.ac (AC_CONFIG_FILES): Added

* configure.ac (AC_CONFIG_FILES): Added
src/vm/jit/i386/darwin/Makefile.

* src/vm/jit/i386/codegen.c (createnativestub): Align stack to
16-bytes.

* src/vm/jit/i386/darwin/md-os.c: Darwin specific functions.
* src/vm/jit/i386/darwin/md-asm.h: Darwin specific assembler defines.
* src/vm/jit/i386/darwin/Makefile.am: New file.
* src/vm/jit/i386/darwin/.cvsignore: Likewise.

* src/vm/jit/i386/linux/md-asm.h: Linux specific assembler defines.
* src/vm/jit/i386/freebsd/md-asm.h: FreeBSD specific assembler defines.

* src/vm/jit/i386/md-asm.h: Removed.

* src/vm/jit/i386/asmpart.S (asm_handle_exception): Align stack to
16-bytes.
(asm_abstractmethoderror): Likewise.
(asm_patcher_wrapper): Likewise.
(asm_builtin_f2i, asm_builtin_d2i, asm_builtin_f2l, asm_builtin_d2l):
Likewise.

* src/vm/jit/i386/Makefile.am (DIST_SUBDIRS): Added darwin.
(AM_CPPFLAGS): Added OS_DIR as include.
(noinst_HEADERS): Removed md-asm.h.

* src/threads/native/threads.c (threads_cast_darwinstop): Use generic
defines and machine dependent structures.