Update the overlay annotation script for go

The Go libraries follow their own naming convention for "query
libraries". These need to be exempted from automatic `overlay[local?]`
annotations since otherwise it appears that too many predicates are
evaluated, possibly because of inadequate use of sentinels.

Author: jbj

config/add-overlay-annotations.py

@@ -199,6 +199,7 @@ def annotate_as_appropriate(filename, lines):
     # as overlay[local?].  It is not clear that these heuristics are exactly what we want,
     # but they seem to work well enough for now (as determined by speed and accuracy numbers).
     if (filename.endswith("Test.qll") or
+        re.search(r"go/ql/lib/semmle/go/security/[^/]+[.]qll$", filename.replace(os.sep, "/")) or
         ((filename.endswith("Query.qll") or filename.endswith("Config.qll")) and
          any("implements DataFlow::ConfigSig" in line for line in lines))):
         return None