Add execution + assembler tests of AArch64 EXT intrinsics.

Add execution + assembler tests of AArch64 EXT intrinsics.

	gcc.target/aarch64/simd/ext_f32.x: New file.
	gcc.target/aarch64/simd/ext_f32_1.c: New file.
	gcc.target/aarch64/simd/ext_p16.x: New file.
	gcc.target/aarch64/simd/ext_p16_1.c: New file.
	gcc.target/aarch64/simd/ext_p8.x: New file.
	gcc.target/aarch64/simd/ext_p8_1.c: New file.
	gcc.target/aarch64/simd/ext_s16.x: New file.
	gcc.target/aarch64/simd/ext_s16_1.c: New file.
	gcc.target/aarch64/simd/ext_s32.x: New file.
	gcc.target/aarch64/simd/ext_s32_1.c: New file.
	gcc.target/aarch64/simd/ext_s64.x: New file.
	gcc.target/aarch64/simd/ext_s64_1.c: New file.
	gcc.target/aarch64/simd/ext_s8.x: New file.
	gcc.target/aarch64/simd/ext_s8_1.c: New file.
	gcc.target/aarch64/simd/ext_u16.x: New file.
	gcc.target/aarch64/simd/ext_u16_1.c: New file.
	gcc.target/aarch64/simd/ext_u32.x: New file.
	gcc.target/aarch64/simd/ext_u32_1.c: New file.
	gcc.target/aarch64/simd/ext_u64.x: New file.
	gcc.target/aarch64/simd/ext_u64_1.c: New file.
	gcc.target/aarch64/simd/ext_u8.x: New file.
	gcc.target/aarch64/simd/ext_u8_1.c: New file.
	gcc.target/aarch64/simd/ext_f64.c: New file.
	gcc.target/aarch64/simd/extq_f32.x: New file.
	gcc.target/aarch64/simd/extq_f32_1.c: New file.
	gcc.target/aarch64/simd/extq_p16.x: New file.
	gcc.target/aarch64/simd/extq_p16_1.c: New file.
	gcc.target/aarch64/simd/extq_p8.x: New file.
	gcc.target/aarch64/simd/extq_p8_1.c: New file.
	gcc.target/aarch64/simd/extq_s16.x: New file.
	gcc.target/aarch64/simd/extq_s16_1.c: New file.
	gcc.target/aarch64/simd/extq_s32.x: New file.
	gcc.target/aarch64/simd/extq_s32_1.c: New file.
	gcc.target/aarch64/simd/extq_s64.x: New file.
	gcc.target/aarch64/simd/extq_s64_1.c: New file.
	gcc.target/aarch64/simd/extq_s8.x: New file.
	gcc.target/aarch64/simd/extq_s8_1.c: New file.
	gcc.target/aarch64/simd/extq_u16.x: New file.
	gcc.target/aarch64/simd/extq_u16_1.c: New file.
	gcc.target/aarch64/simd/extq_u32.x: New file.
	gcc.target/aarch64/simd/extq_u32_1.c: New file.
	gcc.target/aarch64/simd/extq_u64.x: New file.
	gcc.target/aarch64/simd/extq_u64_1.c: New file.
	gcc.target/aarch64/simd/extq_u8.x: New file.
	gcc.target/aarch64/simd/extq_u8_1.c: New file.
	gcc.target/aarch64/simd/extq_f64.c: New file.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210152 138bc75d-0d04-0410-961f-82ee72b054a4