Fixed -o mount option aliases #205

Run through the -o options list first and set all options explicitly which are otherwise not specified. This way, explicitly setting an option overrides the -o option, e.g. --log-level DEBUG overrides -o -d=INFO if both are specified in the same invocation. Tested using automatic mounting through /etc/fstab on system boot. Extended documentation to reflect these changes.
s/explicit specified/specified explicitly/