Prevent temporary editor files from being picked up for POTFILES.in generation

Aparently cmake's file glob also picks up hidden files and doesn't have
an easy way to avoid that.

po/CMakeLists.txt

@@ -88,7 +88,11 @@ function(make_gnucash_potfiles)
   foreach (path ${FILES_IN})
     if (${path} MATCHES "^(bindings/|borrowed/|common/|doc/|libgnucash/|gnucash/)"
         AND
-        NOT ${path} MATCHES "gw-|test|experimental|python-bindings|swig-.*\\.c")
+        NOT ${path} MATCHES "gw-|test|experimental|python-bindings|swig-.*\\.c"
+        # Skip POSIX style hidden files even if they have the proper extension
+        # These are typically temporary files from editors like emacs
+        AND
+        NOT ${path} MATCHES "/[.][^/]*$")
         list (APPEND GOOD_FILES ${path})
     endif ()
   endforeach (path)