cobol: Repair CALL ... USING BY VALUE.

cobol: Repair CALL ... USING BY VALUE.

These changes cause CALL ... USING BY VALUE to work properly for a
wider range of COBOL variables types, values, and sizes.  Some sizes
of numeric-display variables didn't work, some didn't work for negative
values, and floating-extended didn't work at all.  Now they do.

Fourteen new DejaGnu tests cover this repaired capability.

gcc/cobol/ChangeLog:

	* genapi.cc (establish_using): Use a 128-bit type for
	float-extended; handle numeric-edited values of different sizes
	and signs correctly.
	(create_and_call):  Use a 128-bit type for float-extended.

libgcobol/ChangeLog:

	* Makefile.am: Temporarily continue to use -fno-strict-aliasing.
	* Makefile.in: Likewise.
	* libgcobol.cc (__gg__fetch_call_by_value_value): Simplify handling
	of FldFloat.
	(__gg__assign_value_from_stack): Likewise.
	(__gg__unstring): Avoid uninitialized variable error.
	(__gg__look_at_int128): New function useful for debugging.
	(__gg__look_at_pointer): Likewise.
	* xmlparse.cc (xml_event): Implement namespace XML.
	(cdataBlock): Likewise.
	(characters): Likewise.
	(__gg__xml_parse):  Likewise.

gcc/testsuite/ChangeLog:

	* cobol.dg/group2/USING_COMP-3_BY_REFERENCE.cob: New test.
	* cobol.dg/group2/USING_COMP-3_BY_REFERENCE.out: New test.
	* cobol.dg/group2/USING_COMP-3_BY_VALUE.cob: New test.
	* cobol.dg/group2/USING_COMP-3_BY_VALUE.out: New test.
	* cobol.dg/group2/USING_FLOAT-SLX_BY_REFERENCE.cob: New test.
	* cobol.dg/group2/USING_FLOAT-SLX_BY_REFERENCE.out: New test.
	* cobol.dg/group2/USING_FLOAT-SLX_BY_VALUE.cob: New test.
	* cobol.dg/group2/USING_FLOAT-SLX_BY_VALUE.out: New test.
	* cobol.dg/group2/USING_NumericDisplay_BY_REFERENCE.cob: New test.
	* cobol.dg/group2/USING_NumericDisplay_BY_REFERENCE.out: New test.
	* cobol.dg/group2/USING_NumericDisplay_BY_VALUE.cob: New test.
	* cobol.dg/group2/USING_NumericDisplay_BY_VALUE.out: New test.
	* cobol.dg/group2/USING_Signed_-_COMP-3_BY_REFERENCE.cob: New test.
	* cobol.dg/group2/USING_Signed_-_COMP-3_BY_REFERENCE.out: New test.
	* cobol.dg/group2/USING_Signed_-_COMP-3_BY_VALUE.cob: New test.
	* cobol.dg/group2/USING_Signed_-_COMP-3_BY_VALUE.out: New test.
	* cobol.dg/group2/USING_Signed_-_NumericDisplay_BY_REFERENCE.cob: New test.
	* cobol.dg/group2/USING_Signed_-_NumericDisplay_BY_REFERENCE.out: New test.
	* cobol.dg/group2/USING_Signed_-_NumericDisplay_BY_VALUE.cob: New test.
	* cobol.dg/group2/USING_Signed_-_NumericDisplay_BY_VALUE.out: New test.
	* cobol.dg/group2/USING_Signed___COMP-3_BY_REFERENCE.cob: New test.
	* cobol.dg/group2/USING_Signed___COMP-3_BY_REFERENCE.out: New test.
	* cobol.dg/group2/USING_Signed___COMP-3_BY_VALUE.cob: New test.
	* cobol.dg/group2/USING_Signed___COMP-3_BY_VALUE.out: New test.
	* cobol.dg/group2/USING_Signed___NumericDisplay_BY_REFERENCE.cob: New test.
	* cobol.dg/group2/USING_Signed___NumericDisplay_BY_REFERENCE.out: New test.
	* cobol.dg/group2/USING_Signed___NumericDisplay_BY_VALUE.cob: New test.
	* cobol.dg/group2/USING_Signed___NumericDisplay_BY_VALUE.out: New test.