Merge pull request #176 from Smoss/master

Updated test file names.
make TskAutoDb::getCurDir() thread safe
Merge branch 'master' of https://github.com/sleuthkit/sleuthkit
retain original API to getCurDir() but make it thread-safe
minor adj. to make getCurDir() return const string
Merge pull request #178 from adam-m/master

make getCurDir() thread-safe
Merge pull request #179 from Smoss/master

Fixed exception writing and added UTF-8 capability to tests.