* control(ipe): Change dependency on lua interpreter (lua5.1) from depends to recommends. Closes: #561721.
* patches/build-nostrip.patch: New. Install in staging directory without stripping, so that DEB_BUILD_OPTION 'nostrip' can be honoured. Closes: #437230.
* rules: Install fontmap.xml correctly. Install ipe.so symlink in lua's package.cpath so that lua scripts can find ipe. Closes: #562785.