* fold-const.c (fold_unary) <CONJ_EXPR>: Ensure folded expressions
	are type correct.  Clean-up.
	<REALPART_EXPR>: Likewise.  Optimize creal(~z) as creal(z).
	<IMAGPART_EXPR>: Likewise.  Optimize cimag(~z) as -cimag(z).



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@114330 138bc75d-0d04-0410-961f-82ee72b054a4