nx-X11/config/cf/{gnu,lnx}Lib.rules: add RPATH entries for temporary nxcomp and nxcompshad libraries.

No change to the actually installed relinked nxagent(-relink) binary
that gets installed - only affects the temporary executable build
binary.

nx-X11: build programs with a temporary RPATH/RUNPATH value and a relinked version with the system location.

While the install target explicitly installs the relinked
system-location version of a program, we do not actually use this.

Currently, we copy nxagent directly out of the build root.

nx-X11/config/cf/gnuLib.rules: Drop ancient Vcs comment. Erroneously sneaked in with reintroduction of GNU/<non-Linux> support.

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository