- allow to upgrade basic startup files (openacs-4/tcl/*tcl)
to be upgraded via "install from repository" by adding
and after-upgrade callback to bootstrap-installer and
copying the files from there.
- move initialization of nsv_arrays for apm to -init file in acs-tcl
(as suggested by Peter Marklund, but never implemented)
- use double colon prefix rather than "global" statement
to denote global variables
- bump version number to 5.8.1d3