PR modula2/109423 cc1gm2 ICE if an INCL or EXCL is performed on an unknown set

PR modula2/109423 cc1gm2 ICE if an INCL or EXCL is performed on an unknown set

This patch fixes an ICE if attempting to INCL or EXCL on an unknown
set.  The fix was to correct an error format string.  Also included in
the patch are patches to remove unused variables.  The patch also
marks a variable as written in BuildAdr.

gcc/m2/ChangeLog:

	PR modula2/109423
	* gm2-compiler/M2Base.def (Unbounded): Remove.
	* gm2-compiler/M2Error.def (ErrorAbort0): Add noreturn
	attribute.
	* gm2-compiler/M2Quads.mod (BuildInclProcedure): Correct
	error format string.
	(BuildExceptProcedure): Correct error format string.
	(BuildAdrFunction): Call PutWriteQuad when taking the
	address of a variable.
	* gm2-libs-ch/SysExceptions.c (_M2_SysExceptions_init): Add
	parameters.
	* gm2-libs-ch/wrapc.c (_M2_wrapc_init): Add parameters.
	* gm2-libs/DynamicStrings.mod (DumpStringInfo): Remove t.
	(PopAllocationExemption): Remove f.
	* gm2-libs/FIO.mod (BufferedWrite): Remove result.
	* gm2-libs/FormatStrings.mod (Copy): Remove endpos and
	afterperc.
	(HandlePercent): Remove result.
	* gm2-libs/Indexing.mod (RemoveIndiceFromIndex): Remove k.
	* gm2-libs/M2Dependent.mod (CreateModule): Remove p0
	and p1.
	(DumpModuleData): Remove mptr.
	(ConstructModules): Remove nulp.
	* gm2-libs/RTExceptions.mod (PopHandler): Remove i.
	* gm2-libs/RTint.mod (Listen): Remove b4s, b4m, afs
	and afm.
	* gm2-libs/SFIO.mod (ReadS): Remove c.
	* gm2-libs/StringConvert.mod (doDecimalPlaces): Remove
	whole and fraction.

gcc/testsuite/ChangeLog:

	* gm2/pim/fail/setunknown.mod: New test.
	PR modula2/109423
	* gm2/pim/fail/setunknown2.mod: New test.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>