Updated the uw-imap ebuild. The original did not copy several header files
to /usr/include which are required by version 2001a. This was causing php (and
presumably other packages) to fail to compile imap support.
Also moved these header files to /usr/include/imap to aviod clutter
in /usr/include. This is a standard location in other distributions (eg Suse)
for imap headers, and is expected by dependant packages (eg php 4.1.2 will find
the headers here without modification)
Known to compile with php-4.1.2-r6.ebuild