CPP: Add DangerousFunctionOverflow.ql to the security suite.

Author: geoffw0

cpp/config/suites/security/cwe-676

@@ -3,3 +3,5 @@
     @name Dangerous use of 'cin' (CWE-676)
 + semmlecode-cpp-queries/Security/CWE/CWE-676/PotentiallyDangerousFunction.ql: /CWE/CWE-676
     @name Use of potentially dangerous function (CWE-676)
++ semmlecode-cpp-queries/Security/CWE/CWE-676/DangerousFunctionOverflow.ql: /CWE/CWE-676
+    @name Use of dangerous function (CWE-676)