Fix the properties used for the windows installer so they are compatibe
with launch4j
Support for building a Mac OSX DMG on Linux, requires hfsprogs
Replace '/' or '\' in branch name with '_' to ensure consistent use in
file names
Make sure to use same naming for DMG as .jar and .exe installer builds
Tests provided by Jonathan Robie to show group by expression problems
see https://github.com/eXist-db/exist/issues/384
Fix parser issue in group by expressions where the grouping variable is
from the binding of the for expr