fsck tool issues

[animeshtrivedi]

1. https://github.com/zrlio/crail/blob/master/client/src/main/java/com/ibm/crail/tools/CrailFsck.java#L181

The usage show getLocation whereas the check is on getLocations

2. https://github.com/zrlio/crail/blob/master/client/src/main/java/com/ibm/crail/tools/CrailFsck.java#L176

Please show more details to tell the user what is a wrong option. Just exiting is non-intuitive and less helpful to a user who might not know what went wrong with the system.

3. the -r feature is undocumented.

4. https://github.com/zrlio/crail/blob/master/client/src/main/java/com/ibm/crail/tools/CrailFsck.java#L49

A bit more explanation of commands would be helpful too (as I keep forgetting which one to use or what is the difference between getLocation and blockStatistics).

[patrickstuedi]

Fixed in b52952e