Adds skMethod example to idetools api test.
Renames test cases to be more human friendly.
Adds idetools testcase for dynamic dispatch. Refs #477.
next steps for guarded data flow analysis
Merge branch 'master' of github.com:Araq/Nimrod
Adds $TESTNIM and $MODULE as variables to test cases.
Enables trackDirty query for idetools proc mode.
Adds symbol proc run mode as suggested by Zahary.

To avoid collision each test case uses a different nimcache directory
based on the input test filename.
Removes the nimcache symbol directory for each run.
bugfixes for the guarded data flow analysis
Merge pull request #478 from gradha/pr_idetools

More idetools additions
improvements for 'not nil' checking
Merge branch 'master' of github.com:Araq/Nimrod
fixes #481