PR modula2/122241: Lack of spellng hints with simple errors

PR modula2/122241: Lack of spellng hints with simple errors

Following on from the initial bug fix for PR modula2/122241
this patch provides spell check hints for unknown types, variables
and constants.  The accuracy of the offending module end name
is also improved

gcc/m2/ChangeLog:

	PR modula2/122241
	* gm2-compiler/M2Quads.mod (BuildSizeFunction): Improve
	error message.
	(BuildTSizeFunction): Improve error message.
	* gm2-compiler/P3Build.bnf (ProgramModule): New variable
	namet.
	Pass namet to P3EndBuildProgModule.
	(ImplementationModule): New variable namet.
	Pass namet to P3EndBuildImpModule.
	(ModuleDeclaration): New variable namet.
	Pass namet to P3EndBuildInnerModule.
	(DefinitionModule): New variable namet.
	Pass namet to P3EndBuildDefModule.
	* gm2-compiler/P3SymBuild.def (P3EndBuildDefModule): New
	parameter tokno.
	(P3EndBuildImpModule): Ditto.
	(P3EndBuildProgModule): Ditto.
	(EndBuildInnerModule): Ditto.
	* gm2-compiler/P3SymBuild.mod (P3EndBuildDefModule): New
	parameter tokno.
	Pass tokno to CheckForUnknownInModule.
	(P3EndBuildImpModule): Ditto.
	(P3EndBuildProgModule): Ditto.
	(EndBuildInnerModule): Ditto.
	* gm2-compiler/PCBuild.bnf (ProgramModule): New variable
	namet.
	Pass namet to PCEndBuildProgModule.
	(ImplementationModule): New variable namet.
	Pass namet to PCEndBuildImpModule.
	(ModuleDeclaration): New variable namet.
	Pass namet to PCEndBuildInnerModule.
	(DefinitionModule): New variable namet.
	Pass namet to PCEndBuildDefModule.
	* gm2-compiler/PCSymBuild.def (PCEndBuildDefModule): New
	parameter tokno.
	(PCEndBuildImpModule): Ditto.
	(PCEndBuildProgModule):	Ditto.
	(PCEndBuildInnerModule): Ditto.
	* gm2-compiler/PCSymBuild.mod (PCEndBuildDefModule): New
	parameter tokno.
	Pass tokno to CheckForUnknownInModule.
	(PCEndBuildImpModule): Ditto.
	(PCEndBuildProgModule): Ditto.
	(PCEndBuildInnerModule): Ditto.
	* gm2-compiler/PHBuild.bnf (DefinitionModule): New variable
	namet.
	Pass namet to PHEndBuildDefModule.
	(ModuleDeclaration): New variable namet.
	Pass namet to PHEndBuildProgModule.
	(ImplementationModule): New variable namet.
	Pass namet to PHEndBuildImpModule.
	(ModuleDeclaration): New variable namet.
	Pass namet to PHEndBuildInnerModule.
	(DefinitionModule): New variable namet.
	Pass namet to PHEndBuildDefModule.
	* gm2-compiler/SymbolTable.def (CheckForUnknownInModule): Add
	tokno parameter.
	* gm2-compiler/SymbolTable.mod (CheckForUnknownInModule): Add
	tokno parameter.
	Pass tokno to CheckForUnknowns.
	(CheckForUnknowns): Reimplement.

gcc/testsuite/ChangeLog:

	PR modula2/122241
	* gm2/iso/fail/badconst.mod: New test.
	* gm2/iso/fail/badtype.mod: New test.
	* gm2/iso/fail/badvar.mod: New test.

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