ppc-spe.c: Compile for all EABI targets.

	* gcc.target/powerpc/ppc-spe.c: Compile for all EABI targets.
	Explicitly enable SPE.
	* gcc.target/powerpc/20030505.c: Likewise.  Add dg-message
	directive.

	* gcc.target/powerpc/20030218-1.c: Pass -mfloat-gprs=single.
	Expect -flax-vector-conversions message.  Adjust incompatible
	types errors.
	* gcc.target/powerpc/spe1.c: Pass -mspe and -mfloat-gprs=single.
	Make Foo extern.

	* gcc.dg/cpp/assert4.c: Recognize __PPC__.

	* g++.dg/other/opaque-1.C: Run on targets with SPE.

	* g++.dg/ext/spe-1.C: Pass -mspe and -mfloat-gprs=single.
	* g++.dg/other/opaque-2.C: Likewise.
	* g++.dg/other/opaque-3.C: Likewise.

From-SVN: r143307