* predict.h: Convert to ISO C90 prototypes.
	* predict.c: Likewise.
	* tree-dump.h: Likewise.
	* tree-dump.c: Likewise.
	* diagnostic.h: Likewise.
	* diagnostic.c: Likewise.
	* combine.c: Likewise.

	* rtl.h: Convert prototypes of combine.c to ISO C90.

From-SVN: r67626