PR modula2/114811 string set incl ICE bugfix

PR modula2/114811 string set incl ICE bugfix

This patch corrects gm2-torture.exp to recognize an ICE
in the fail case as a negative result.  The patch also fixes
FoldBinarySet so that the types are only checked once the operands
have been resolved.  Without this patch
gcc/testsuite/gm2/iso/fail/badexpression2.mod would cause an ICE.

gcc/m2/ChangeLog:

	PR modula2/114811
	* gm2-compiler/M2GenGCC.mod (FoldBinarySet): Add condition
	checking to ensure op2 and op3 are fully resolved before
	type checking is performed.

gcc/testsuite/ChangeLog:

	PR modula2/114811
	* lib/gm2-torture.exp: Correct regexp checking for internal
	compiler error strings in compiler output.

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