rs6000-c.c (rs6000_macro_to_expand): If macro following vector keyword has expansion starting with pixel or bool...

	* config/rs6000/rs6000-c.c (rs6000_macro_to_expand): If macro
	following vector keyword has expansion starting with pixel or bool
	keyword, expand vector to __vector and pixel or bool to __pixel or
	__bool.

	* gcc.target/powerpc/altivec-28.c: New test.

From-SVN: r145199