Added new session tests
Added realpath check to test to resolve the file to ensure that it exists
Added in tests for session.bug_compat_42, session.bug_compat_warn and session.hash_function.
Added session.bug_compat_42 and session.bug_compat_warn to the deprecated list (removed in 5.4.0) and fixed isDeprecated() function
Merge pull request #67 from xsist10/master

Rules for session.bug_compat_42, session.bug_compat_warn and session.hash_function