[BZ-1127999]  JBOSS JSP class loading problem due to case insensitivity
realRoot must be canonalize. When getFile is invoked and the 
realRoot provided is not the exact match the vfs creates a 
non-canonical form of the file. This could lead when the flag
-Djboss.vfs.forceCaseSensitive=true is set to fail on windows.
Merge pull request #22 from elguardian/BZ-1127999

[BZ-1127999]  JBOSS JSP class loading problem due to case insensitivity