Dont call READCAPACITY from every single test.
Remove two arguments from the test signatures and turn them into globals.
remove the ret++ silliness. Tests return 0 : all ok, -2, skipped or -1 : test failed
* mark unused parameter as such
* wrap parens around a bitop
* remove unused labels
* fix error messages
Signed-off-by: Arne Redlich <arne.redlich@googlemail.com>