latest 2.x branch from github.

requires json-c, gtkmm v2, unifont

# patch -p1 < ../debian/patches/01_RemoveGitHash.patch
# patch -p1 < ../debian/patches/20_use_system_unifont.patch
NO THIS FAILS# patch -p1 < ../debian/patches/30_fix_ftbfs_glibc.patch

extlib/libdxfrw is empty... get it from the debian src pkg.

# mkdir build
# cd build
# cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr
# make
# new2dir make install