r300/compiler: Copy all instruction attributes during local transfoms

r300/compiler: Copy all instruction attributes during local transfoms

Instruction attributes like WriteALUResult and ALUResultCompare
were being discarded during the some of the local transformations.

This fixes the following piglit tests:

glsl1-inequality (vec2, pass)
loopfunc
fs-any-bvec2-using-if
fs-op-ne-bvec2-bvec2-using-if
fs-op-ne-ivec2-ivec2-using-if
fs-op-ne-mat2-mat2-using-if
fs-op-ne-vec2-vec2-using-if
fs-op-ne-mat2x3-mat2x3-using-if
fs-op-ne-mat2x4-mat2x4-using-if

https://bugs.freedesktop.org/show_bug.cgi?id=45921

NOTE: This is a candidate for the stable branches.