Update 600_nx-X11+nxcompext+nxcompshad_unique-libnames.full.patch. Don't patch files matter to the NX code reduction efforts.

Drop patches: 017_nx-X11_update-autotools-helper-files.full.patch, 018_nx-X11_update-libtool-ltmain-script.full.patch, 019_nx-X11_expat-build-against-system-libxmltok.full.patch. They patch files that are not used at build time.

  + Add Obsoletes: fields to all shared libs for marking the non-versioned
    library package (names) as obsolete.
  + Don't depend on nx-libs base package with fixed version.

This reverts commit 1e5c83e8.

Add 991_fix-hr-typos.full+lite.patch and 991_fix-hr-typos.full.patch. Fix several typos in upstream code detected by lintian.