Most of the copyright years in the source code were misleading (the date of
most recent publish was actually later) and all were unnecessary. I've been
removing copyright years piecemeal, for a long time, but I decided it was time
to just perform a bulk search and (mostly) replace. In some cases, I left
old copyright years on files that either are not used (and soon to be removed)
or obsolete and unlikely to ever be touched again (e.g. Win9x FOSSIL VXD). Some
of the runtime binaries still contain copyright years and those were updated to
2018.

about undefined targets.

best of tests:
if(!notatend)

means the LD_RUN_PATH is ignored, so we need to use -Wl,--rpath too.

This may not work on all platforms... it'd be ld(1) specific.

Creating new users.
Integrating into build system.

separate buttons.