Add Output.def, Output.mod to ppg and remove unused variables.

Add Output.def, Output.mod to ppg and remove unused variables.

2021-07-28  Gaius Mulley   <gaius.mulley@southwales.ac.uk>

        * Make-lang.in:  Added Output.mod to the list of ppg
	modules.
	* Make-lang.in:  Added Output.def to the list of ppg
	modules.
	* gm2-compiler/Output.def: (New file).
	* gm2-compiler/Output.mod: (New file).
	* bnf/gm2l.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/gm2m.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/m2-1.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/m2-2.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/m2-3.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/m2-c.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/m2-h.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/m2.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/mc-1.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/mc-2.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/mc-3.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/mc-4.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* bnf/mc-5.bnf: (DescribeError) no longer has any parameters.
	Removed unused rules.
	* gm2-compiler/M2ALU.mod: (InitialiseArrayOfCharWithString)
	isChar set to FALSE.
	* gm2-compiler/M2ALU.def: (DisplayModules) exported.
	* gm2-compiler/M2Depth.def: (DisplayGraph) exported.
	* gm2-compiler/M2Depth.mod: (DisplayGraph) added comment.
	* gm2-compiler/M2Options.mod: (SetProfiling) commented out.
	* gm2-compiler/M2Quads.mod: (BuildAddAdrFunction) vartok removed.
	(BuildAbsFunction) combinedtok removed. (BuildRotateFunction)
	paramtok removed.
	* gm2-compiler/P0SymBuild.mod: (pc) commented out.
	(FlushImports) removed sym and reformatted.  (DeclareModules)
	reformatted.  (MoveNext) commented out.
	* gm2-compiler/SymbolKey.mod: (stop) commented out.
	* gm2-compiler/ppg.mod: (Output) imported.  (ArgName)
	declared.  (ParametersUsed) declared.  (PrettyFollow)
	use the Output module to delay emitting text.  (WriteCodeHunkList)
	use the Output module to delay emitting text.  (WriteIndent)
	use the Output module to delay emitting text.  (WriteIndent)
	(CheckWrite) use the Output module to delay emitting text.
	(WriteIndent) use the Output module to delay emitting text.
	(NewLine) use the Output module to delay emitting text.
	(IndentString) use the Output module to delay emitting text.
	(DescribeError) remove parameters.  (SyntaxError) call
	DescribeError without parameters.  (KeyWord) use the
	Output module to delay emitting text.  (PrettyPara)
	use the Output module to delay emitting text.  (WriteKeyTexinfo)
	use the Output module to delay emitting text.
	(PrettyCommentFactor) use the Output module to delay emitting
	text.  (PrettyCommentTerm) use the Output module to delay emitting
	text.  (PrettyCommentProduction) use the Output module to delay emitting
	text.  (PrettyPrintProduction) use the Output module to delay emitting
	text.  (EmitFileLineTag) use the Output module to delay emitting
	text.  (CodeThenDo) use the Output module to delay emitting
	text.  (CodeElseEnd) use the Output module to delay emitting
	text.  (EmitNonVarCode) use the Output module to delay emitting
	text.  (FlushCode) use the Output module to delay emitting
	text.  (CodeFactor) use the Output module to delay emitting
	text.  (CodeProduction) use the Output module to delay emitting
	text.  (WriteElement) use the Output module to delay emitting
	text.  (EmitIsInSet) use the Output module to delay emitting
	text.  (EmitIsInSubSet) use the Output module to delay emitting
	text.  (EmitIsInFirst) use the Output module to delay emitting
	text.  (RecoverFactor) use the Output module to delay emitting
	text.  (RecoverTerm) use the Output module to delay emitting
	text.  (EmitUsed) use the Output module to delay emitting
	text.  (EmitStopParameters) use the Output module to delay emitting
	text.  (EmitSet) use the Output module to delay emitting
	text.  (EmitSetName) use the Output module to delay emitting
	text.  (EmitStopParametersAndSet) use the Output module to delay emitting
	text.  (EmitSetAsParameters) use the Output module to delay emitting
	text.  (EmitStopParametersAndFollow) use the Output module to delay emitting
	text.  (RecoverProduction) use the Output module to delay emitting
	text.  (WriteUpto) use the Output module to delay emitting
	text.  (CheckForVar) use the Output module to delay emitting
	text.  (EmitFDLNotice) use the Output module to delay emitting
	text.  (DescribeElement) use the Output module to delay emitting
	text.  (EmitInTestStop) use the Output module to delay emitting
	text.  (DescribeStopElement) use the Output module to delay emitting
	text.  (EmitDescribeStop) use the Output module to delay emitting
	text.  (EmitDescribeError) use the Output module to delay emitting
	text.  (EmitSetTypes) use the Output module to delay emitting
	text.  (ParseArgs) open output filename.
	* gm2-gcc/m2decl.c: (m2decl_DeclareKnownVariable) change format
	specifier to generate quoted declaration.  Call internal_error
	and use quoted format specifier.
	* gm2-gcc/m2except.c:  (ASSERT) removed.  (ERROR) removed.
	(m2except_BuildThrow) rewritten.
	* gm2-gcc/m2expr.c: (m2expr_GetSizeOfInBits) use quoted format
	specifier for error.  (m2type_BuildSetTypeFromSubrange) add
	attribute unused for the name of the subrange and add comment
	about dwarf-5 set type.
	* gm2-libs/StrLib.def: (StrLen) renamed parameters.
	* gm2-libs/StrLib.mod: (StrLen) renamed parameters.
	* init/ppginit: Add SFIO and Output to the list of modules.
	* gm2-compiler/Output.def: (New file).
	* gm2-compiler/Output.mod: (New file).

Signed-off-by: Gaius Mulley <gaius.mulley@southwales.ac.uk>