Fix typo.
Remove old, non-free version of netgen.
Remove script to set CVS permissions.
Update MPI autoconf macro.

The new version is taken from Debian's autoconf-archive package
(version 20131101-1).
Set soname for shared libraries.

libtool's -release option is used instead of -version to avoid having
to track ABI changes for now.
Set ACLOCAL_AMFLAGS = -I m4

This should allow using autoreconf instead of the custom autogen.sh
script.
Remove ugView.

ugView seems to be for the classic Mac OS (before Mac OS X) and should
no longer be relevant. It was last modified in 1998 -- a year before
Mac OS X Server 1.0 was released.
Remove CodeWarrior support.

Metrowerks CodeWarrior changed focus towards embedded applications
after scquisition by Motorola. It probably is no longer relevant as a
target for UG.
Remove NeXTSTEP interface.
Remove Mac OS interface.
Remove bin/ugkillall.

ugkillall tries to do what the killall command on Linux already
provides. It probably is no longer of much use nowadays.
Remove several scripts for old build system.
Remove copies of LaTeX style sheets.

These files can be found as part of LaTeX, for example in Debian in
the latex209-base package. There is no need to include a copy in UG.
Remove two more utilities for the old build system.
Remove ug metafile display program for the IRIS Indigo.
Source files do not need to be executable.