PR fortran/17792

PR fortran/17792
PR fortran/21375
* trans-array.c (gfc_array_deallocate): pstat is new argument
  (gfc_array_allocate): update gfc_array_deallocate() call.
  (gfc_trans_deferred_array): ditto.
* trans-array.h: update gfc_array_deallocate() prototype.
* trans-decl.c (gfc_build_builtin_function_decls): update declaration
* trans-stmt.c (gfc_trans_deallocate): Implement STAT= feature.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@100845 138bc75d-0d04-0410-961f-82ee72b054a4