Remove the 'INSTALL_OPTS' section from debian/patches/Makefile.patch.
Correct Last-Update for debian/patches/Makefile.patch.
Corrected Copyright and Licence in mmail/bluewave.h stanza of debian/copyright.
Update debian/changelog to 0.49-3~4 (UNRELEASED).
Update Standards-Version to 3.9.5 in debian/control.