Fix issue with external: being logged for all modules in binary builds.

If the code object's file name is not an absolute path, never treat it as external, as code in library.zip reports relative paths in binary builds.
Re #3370.

source/logHandler.py

@@ -32,7 +32,11 @@ def getCodePath(f):
 	@rtype: string
 	"""
 	fn=f.f_code.co_filename
-	if fn[0] != "<" and not fn.startswith(sys.path[0] + "\\"):
+	if fn[0] != "<" and os.path.isabs(fn) and not fn.startswith(sys.path[0] + "\\"):
+		# This module is external because:
+		# the code comes from a file (fn doesn't begin with "<");
+		# it has an absolute file path (code bundled in binary builds reports relative paths); and
+		# it is not part of NVDA's Python code (not beneath sys.path[0]).
 		path="external:"
 	else:
 		path=""