Installation instructions for qmail-tap

This patch was made against the original qmail tarball.
Most people will not be using the orignal tar ball, but since
there could be so many variations on a patched qmail source tree,
we thought it would be easiest to patch against a known tree,
the original source.

1) Get the original source code
http://cr.yp.to/qmail.html has links.

2) Untar qmail source
tar zxf qmail-1.03.tar.gz

3) Apply patch
patch -p0 < qmail-tap.diff

4) Done

To compile it you will at least need to change the error.h file
to include errno.h just after the ifdefs at the top of the file.

#include error.h 


Note: We had to include the qregex files in the patch since 
it uses qregex to match to/from address patterns.