remove instructions recently added to 9front. implemented some tests.
corrected tests and reimplemented some functions using 6a's own instructions.
cleaned things up and improved the organization a bit.
add more avx instructions and place VZEROUPPERs.
clean and organize things up. implement VZEROUPPER.
add more avx instructions and a bench9 benchmark file.
fix the 9 asm notes. add VFMA231[SP]D instructions.
add base VEX encoding definitions.
add 9 asm notes of the macro instructions.
initial SIMD trials of some libgeometry functions.