GP-4009 Introduced BSim functionality including support for postgresql,

elasticsearch and h2 databases.  Added BSim correlator to Version
Tracking.

Ghidra/Features/BSim/ghidra_scripts/ExampleOverviewQuery.py

@@ -0,0 +1,47 @@
+## ###
+#  IP: GHIDRA
+# 
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#  
+#       http://www.apache.org/licenses/LICENSE-2.0
+#  
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+##
+# Example of how to perform an overview query in a script
+# @category BSim.python
+
+import ghidra.query.facade.SFOverviewInfo as SFOverviewInfo
+import ghidra.query.facade.SimilarFunctionQueryService as SimilarFunctionQueryService
+import java.util.HashSet
+
+SIMILARITY_BOUND = 0.7
+SIGNIFICANCE_BOUND = 0.0
+
+funcsToQuery = java.util.HashSet()
+fIter = currentProgram.getFunctionManager().getFunctionsNoStubs(True)
+for func in fIter:
+   funcsToQuery.add(func.getSymbol())
+
+overviewInfo = SFOverviewInfo(funcsToQuery)
+overviewInfo.setSimilarityThreshold(SIMILARITY_BOUND)
+overviewInfo.setSignificanceThreshold(SIGNIFICANCE_BOUND)
+
+queryService = SimilarFunctionQueryService(currentProgram)
+DB_URL = askString("Enter database URL", "URL:")
+queryService.initializeDatabase(DB_URL)
+vectorFactory = queryService.getLSHVectorFactory()
+
+overviewResults = queryService.overviewSimilarFunctions(overviewInfo, monitor)
+
+for result in overviewResults.result:
+    print "Name: %s" % result.getBase().getFunctionName()
+    print "Hit Count: %d" % result.getTotalCount()
+    print "Self-significance: %f\n" % vectorFactory.getSelfSignificance(result.getBase().getSignatureRecord().getLSHVector())
+
+queryService.dispose()