configure.ac (RPATH_ENVVAR): Use PATH on Windows.

configure.ac (RPATH_ENVVAR): Use PATH on Windows.

2008-08-31  Aaron W. LaFramboise  <aaronavay62@aaronwl.com>

	<toplevel>
	* configure.ac (RPATH_ENVVAR): Use PATH on Windows.
	(GCC_SHLIB_SUBDIR): New.
	* Makefile.tpl (HOST_LIB_PATH_gcc): Use GCC_SHLIB_SUBDIR.
	* configure: Regenerate.
	* Makefile.in: Regenerate.

	<gcc>
	* mkmap-flat.awk: Add option pe_dll.
	* config/i386/t-cygming (SHLIB_LINK): Support building libgcc_s.
	* gcc/config/i386/t-cygwin (SHLIB_LC): Add.
	* gcc/config/i386/t-mingw32 (SHLIB_LC): Add.
	* config/i386/mingw32.h (SHARED_LIBGCC_UNDEFS_SPEC): New.
	(SUBTARGET_EXTRA_SPECS): Use SHARED_LIBGCC_UNDEFS_SPEC.
	(LINK_SPEC): Support libgcc_s.
	(LIBGCC_SPEC): Support libgcc_s.
	(LIBGCC_SONAME): New.

	<libstdc++-v3>
	* acinclude.m4 <enable_symvers>: Don't use symvers on Windows.
	* configure: Regenerated.
	* Makefile.in: Regenerated.
	* src/Makefile.in: Regenerated.
	* doc/makefile.in: Regenerated.
	* po/Makefile.in: Regenerated.
	* libmath/Makefile.in: Regenerated.
	* include/Makefile.in: Regenerated.
	* libsupc++/Makefile.in: Regenerated.
	* testsuite/makefile.in: Regenerated.

From-SVN: r139837