intrinsic.c (add_functions): Add INT2, SHORT, INT8, LONG, LSTAT, MCLOCK and MCLOCK8 intrinsic functions.

	* intrinsic.c (add_functions): Add INT2, SHORT, INT8, LONG,
	LSTAT, MCLOCK and MCLOCK8 intrinsic functions.
	(add_subroutines): Add LSTAT intrinsic subroutine.
	* gfortran.h (gfc_generic_isym_id): Add GFC_ISYM_INT2,
	GFC_ISYM_INT8, GFC_ISYM_LONG, GFC_ISYM_LSTAT, GFC_ISYM_MCLOCK
	and GFC_ISYM_MCLOCK8.
	* iresolve.c (gfc_resolve_int2, gfc_resolve_int8,
	gfc_resolve_long, gfc_resolve_lstat, gfc_resolve_mclock,
	gfc_resolve_mclock8, gfc_resolve_lstat_sub): New functions.
	* check.c (gfc_check_intconv): New function.
	* trans-intrinsic.c (gfc_conv_intrinsic_function): Add cases for
	the added GFC_ISYM_*.
	* simplify.c (gfc_simplify_intconv, gfc_simplify_int2,
	gfc_simplify_int8, gfc_simplify_long): New functions.
	* intrinsic.h (gfc_check_intconv, gfc_simplify_int2,
	gfc_simplify_int8, gfc_simplify_long, gfc_resolve_int2,
	gfc_resolve_int8, gfc_resolve_long, gfc_resolve_lstat,
	gfc_resolve_mclock, gfc_resolve_mclock8, gfc_resolve_lstat_sub):
	Add prototypes.

	* gfortran.dg/mclock.f90: New test.
	* gfortran.dg/int_conv_1.f90: New test.
	* gfortran.dg/stat_1.f90: New test.
	* gfortran.dg/stat_2.f90: New test.

	* configure.ac: Check for function clock.
	* Makefile.am: Compile new file intrinsics/clock.c.
	* intrinsics/clock.c: New file.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* config.h.in: Regenerate.
	* intrinsics/stat.c: Rename the old stat_i?_sub functions to
	helper functions stat_i?_sub_0, and use them for both STAT and
	LSTAT.

From-SVN: r115754