build args check in imap-uw/cclient

[Jubal Kessler]

Hello,

I built a new version of imap-uw with -DWITH_SSL_AND_PLAINTEXT, but forgot
to do the same for the cclient port. The result is that plaintext logins
failed, and it took me a little while to figure out why.

Is there a way to tell the imap-uw install to also pass the
-DWITH_SSL_AND_PLAINTEXT build argument to cclient?

Regards,

Jubal