Update patch: 001_add-main-makefile.full+lite.patch, only build, install, clean etc. NX subprojects if the folder exists.

Reorganize patch names, to reflect patch inclusion into lite+full or full-only ,,NX (redistributed)'' tarball.

Silence lintian on debian-revision-should-not-be-zero. As this is no Debian packaging repository, but ,,NX (redistributed)'', we will always release with rev no. set to ,,0''.

Fix lintian issue: missing-separator-between-items for x2goagent package. Drop dependency on libnx-x11 as we already depend on nxagent and fix description synopsis of x2goagent package.

two more patches belonging to last commit: 016a_debian_nx-X11_install-location.patch, 102a_debian_xserver-xext_set-securitypolicy-path.patch

Provide patches that are tarball / distro aware. Either NX (redistributed) has been installed to /usr/local/lib/nx via tarball or it has been packagedfor a distribution and is installed to /usr/lib/nx. Other installation paths are currently not supported.

Modify patch: 101_nxagent_set-rgb-path.patch, add path to RGB file if NX (redistributed) is installed via tarball under /usr/local.

Revert "Drop patch: 101_nxagent_set-rgb-path.path, add patch: 202_nxagent_set-rgb-path-x2go-flavour-aware.patch."

This reverts commit d9d49b5d.

Drop patch: 101_nxagent_set-rgb-path.path, add patch: 202_nxagent_set-rgb-path-x2go-flavour-aware.patch.

  - 200_nxagent_check-binary-x2go-flavour.patch
  - 201_nxagent_set-x2go-icon-if-x2goagent-flavour.patch
  - 300_nxagent_set-wm-class.patch
  - 999_nxagent_unbrand-nxagent-brand-x2goagent.patch

Add patches: 009_add-nxagent-man-page.patch, 009_add-nxproxy-man-page.patch. Reintroduce man page creation via patch system, so that all man pages find their way into the NX-redistribution tarball created from this source project.