godump.c (go_format_type): Represent "float _Complex" and "double _Complex" as complex64 or complex128 in...

gcc/:
	* godump.c (go_format_type): Represent "float _Complex" and
	"double _Complex" as complex64 or complex128 in Go, as appropriate.
gcc/testsuite/:
	* gcc.misc-tests/godump-1.c: Add tests for complex types.

From-SVN: r216840