SW-919: Changed svn.astron.nl to git.astron.nl for code reference and checkout instructions/examples

SW-822: Commit unstashable / unresetable file changes after fresh clone, probably due to .gitattributes / line endings

SW-685: Propagate database port/user/password from jOTDBserver command line to OTDB wrapper. Draw credentials from dbcredentials in OTB server startup script.

SW-90: made some changes in the cmake/lofar find_package logic: when we want the BUILD_DOCUMENTATION, then the REQUIRED option is removed from the (lofar)_find_package calls. This allows cmake to finish configuring and generating Makefiles, and allows us to build the target doc, but probably not parts of the code when external packages are not found. That's ok, and intentional.

Task #3740 [maven-release-plugin]:prepare release Maven-Release-nl.astron.lofar.sas.otb.otb-parent-2.21.0

Task #3740 [maven-release-plugin]:prepare release Maven-Release-nl.astron.lofar.sas.otb.otb-parent-2.16.3

Fix merge conflict on momqueryservice.py. Moved on trunk, but changed on this branch.
Solve by replacing the moved file with the changed file (thus, move the changed file over the moved file).
Careful checking of (JD's) changes shows this is correct; the changes are preserved.
Other moved files did not cause conflicts, since they were not changed.

Task #3740 [maven-release-plugin]:prepare release Maven-Release-nl.astron.lofar.sas.otb.otb-parent-2.16.2

Task #3740 [maven-release-plugin]:prepare release Maven-Release-nl.astron.lofar.sas.otb.otb-parent-2.9.0

Task #3740 [maven-release-plugin]:prepare release Maven-Release-nl.astron.lofar.sas.otb.otb-parent-2.8.1

Jan David agreed it makes sense, although some software covered is not
currently maintained by the RO software team.
All replacements happen in comments, so this is safe. (viewed svn diff | grep ... by hand)
Command used:
LOFAR$ grep -r -l seg@astron.nl * | xargs sed -i -e 's/seg@astron.nl/softwaresupport@astron.nl/g'

Task #3740 [maven-release-plugin]:prepare release Maven-Release-nl.astron.lofar.sas.otb.otb-parent-2.8.0