PR modula2/112865 IM and RE fails to skip type equivalences

PR modula2/112865 IM and RE fails to skip type equivalences

This patch skip type equivalences when checking IM and RE
ISO M2 standard functions for complex data type operands.

gcc/m2/ChangeLog:

	PR modula2/112865
	* gm2-compiler/M2Quads.mod (BuildReFunction): Use
	GetDType to retrieve the type of the operand when
	converting the complex type to its scalar equivalent.
	(BuildImFunction): Use GetDType to retrieve the type of the
	operand when converting the complex type to its scalar
	equivalent.

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