Remove debian/watch file.
Remove obsolete debian/ghdl.wrapper file.
Avoid timestamps in quilt patches in conformance to https://wiki.debian.org/UsingQuilt
Format patch headers according to http://dep.debian.net/deps/dep3/
Convert to debian source format 3.0 (quilt).
Use pristine upstream source package instead of repackaged sources.
Make "debian/rules clean" more thorough.
Take DEB_*_GNU_TYPE from /usr/share/dpkg/default.mk.
Fix error in debian/rules clean target.
Machine-readable copyright file.
Mark copyrights of IEEE libraries.
Minor cleanups in debian/copyright.