libgupc/
Implement upc_castable library support (per UPC 1.3 spec.)
* Makefile.am: Add upc_castable.h as an exported header file.
Add smp/upc_castable.upc and portals4/gupcr_castable.upc
to list of runtime source fies.
* Makefile.in: Re-generate.
* include/upc_castable.h: New.
* portals4/gupcr_castable.upc: New.
* smp/upc_castable.upc: New.
gcc/upc/
* upc-act.c (upc_cpp_builtins): Pre-define __UPC_CASTABLE__.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gupc@197278 138bc75d-0d04-0410-961f-82ee72b054a4