* Debian/Ubuntu packaging:
    + Fully rework the way nx-libs gets packaged for Debian/Ubuntu.
    + Split up libnx-x11 into individual packages.
    + Provide dbg:packages for each bin:package containing binaries.
    + Use Makefile logic to install files into DESTDIR.
    + Provide dev:packages for each lib:package individually.
    + Provide nx-x11proto-*-dev packages for all libnx-* libraries.
    + Install _all_ library files (*.so*) to /usr/lib/<triplet>/, so
      no extra settings of LD_LIBRARY_PATH is necessary.

Add 321_nxagent_x2go-specific-keystroke-config.full.patch. If nxagent is launched as x2goagent, use X2Go-specific paths for the keystrokes.cfg file. (Fixes: #744).

No longer add them as quilt patch, as they are much easier to edit this
way. This, of course, requires adjustments to the roll-tarballs.sh script