Correct TCPA format (FS1289)
Correct metres abbreviation to "m"  (FS#1336)
Change playback time interval setting : only one parameter instead of two
and do not allow values witch are not sub-multiples of the original file
intervall to ovoid inconsistencies . Also make it more understandable
to common users.(#FS 1337)
Add Waves period in Weather Table
Correct playback regressions
Add linux serial port and group access check (FS#1340)
Correct potential null pointer dereference.
Merge pull request #96 from Ptizef/master

Change Setting logic for playback time interval setting and add waves period in weather table
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN into mainline

Conflicts:
	src/AIS_Target_Data.cpp
	src/Quilt.cpp
	src/chart1.cpp
	src/options.cpp