Compact/Uncompact

[Kenneth Almquist]

Even the System V pack/unpack can be improved.  The unpack code processes
one bit at a time; I got about a fourfold speed improvement by modifying
the code to pull off 8 bit chunks.  Before that I recoded the unpack routine
in PDP-11 assembly language which resulted in a comparable performance
improvement without modifying the unpacking algorithm.
				Kenneth Almquist