This is more on make install/uninstall, and should settle all outstanding

This is more on make install/uninstall, and should settle all outstanding
issues. Install needs a non-root user, preferably user=privoxy. This
is mostly the work of higuita (David Liete). Thanks.
Needs testing, and maybe a few small loose ends, but should do a
reasonable job otherwise. I also changed all == to = in the relevant sections
only per Brian's win32 report.