Defined  a new artifact: TSK_INTERESTING_ARTIFACT
Delete the unused attribute TSK_PROG_LAUNCHED.
Merge pull request #276 from raman-bt/develop

Defined  a new artifact: TSK_INTERESTING_ARTIFACT
Changed name of extension mismatch artifact type.
Merge remote-tracking branch 'upstream/develop' into develop

Conflicts:
	bindings/java/src/org/sleuthkit/datamodel/BlackboardArtifact.java
	framework/tsk/framework/services/TskBlackboard.cpp
	framework/tsk/framework/services/TskBlackboard.h
Remove line that refers to TSK_PROG_LAUNCHED, as that no longer exists.