Merge pull request #139 from richardxx/master

Fix some bugs in querying interface
Speedup querying.
Speedup again.
removing slf4j from Soot, as it is already contained in Heros
fix debug to avoid null pointer exception
fixed a "too many open files" bug (file descriptor leak)
finally (!) added some methods to easily access line and column numbers (only took 12 years)
updated CHANGES
Improve querying efficiency again.
Fix a bug in obj_1cfa_extractor.
Add back VarNode.
Change back for VarNode.
But there is a bug for a long time.
Fix a bug in obj_1cfa_extractor.
Fixed a bunch of typos
Merge pull request #142 from pSub/fixed-some-typos

Fixed a bunch of typos
correct type signatures for "enclosing method" annotations
fix for bug 141 "Semantic Error: duplicate member B in compilation unit"

https://github.com/Sable/soot/issues/141#issuecomment-27985362
Merge commit '2662362a9309ac5be71ba662fe3ab8ac00ea5228' into develop
Select minSdkVersion if sdkTargetVersion not available.
added a target for generating JavaDoc