`NewSystemBrowser`: avoid updating package info when changed class is not selected
This speeds up loading of packages when browser is open as it does
not (needlessly) update package info which may involve scm round-trip.
This directory contains resource files for the tools.
These files are normally copied or sym-linked to a standard
place (like '/usr/local/lib/smalltalk/resources').
The tools get their strings from these resource files.
If you change anything here, make sure to do a 'make newResources'
in the directory '../smalltalk' and - if appropriate reinstall
the resource files into their standard place.
Notice: in ST/X above vsn 2.10.2, all style relevant stuff has
been removed from the resource files into separate style
sheets. Resourcefiles now only contain string translations.