PR modula2/110189 Using an unknown TYPE as argument to VAL gives ICE

This patch tidies P3Build.bnf and fixes error format specs in
M2Quads.mod when encountering unknown symbols.

gcc/m2/ChangeLog:

	PR modula2/110189
	* gm2-compiler/M2Quads.mod (BuildAbsFunction): Replace abort
	format specifier.
	(BuildValFunction): Replace abort format specifier.
	(BuildCastFunction): Replace abort format specifier.
	(BuildMinFunction): Replace abort format specifier.
	(BuildMaxFunction): Replace abort format specifier.
	(BuildTruncFunction): Replace abort format specifier.
	* gm2-compiler/P3Build.bnf (Pass1): Remove.
	(Pass2): Remove.
	(Pass3): Remove.
	(Expect): Add Pass1.
	(AsmStatement): Remove Pass3.
	(AsmOperands): Remove Pass3.
	(AsmOperandSpec): Remove Pass3.
	(AsmInputElement): Remove Pass3.
	(AsmOutputElement): Remove Pass3.
	(AsmTrashList): Remove Pass3.

gcc/testsuite/ChangeLog:

	PR modula2/110189
	* gm2/pim/fail/foovaltype.mod: New test.

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