cpp.c (cpp_define_builtins): Define _OPENMP to 201511 instead of 201307.

cpp.c (cpp_define_builtins): Define _OPENMP to 201511 instead of 201307.

gcc/fortran/
	* cpp.c (cpp_define_builtins): Define _OPENMP to 201511 instead
	of 201307.
	* gfortran.texi: Mention partial OpenMP 4.5 support.
	* intrinsic.texi: Update for OpenMP 4.5.
gcc/testsuite/
	* gfortran.dg/openmp-define-3.f90: Expect 201511 instead of
	201307.
libgomp/
	* omp_lib.f90.in (openmp_version): Change to 201511 from 201307.
	* omp_lib.h.in (openmp_version): Likewise.
	* testsuite/libgomp.fortran/openmp_version-1.f: Expect 201511 instead
	of 201307.
	* testsuite/libgomp.fortran/openmp_version-2.f90: Likewise.

From-SVN: r242044