Change Debian install PREFIX to /usr
Add recursion safeties to chart database access.
3.3.1418
refactor rotation code
cleanup debugging code
general cleanup to minimize differences with master
Updates to PlugIn chart interface, especially S57 extended sectors and NATSUR attributes display.
Correct OSX Info.plist format rules.
auto reconnect to gpsd server
make smooth zooming work for toolbar zoom buttons
Merge remote-tracking branch 'upstream/master' into optimum

Conflicts:
	include/s52plib.h
	src/chartdb.cpp
	src/s57chart.cpp