ALIGN pseudoinstruction does nothing

[sneves]

PeachPy appears to support the ALIGN directive to align, e.g., loops, but it seems to have no effect on the output.

Since the code generator needs to know the size of instructions, it should have enough information to work out current (relative) offset to the beginning of the function. On the other hand, Functions do not seem to have any kind of alignment, so they can start anywhere.