update to latest gisconverter.php

diff --git a/library/gisconverter b/library/gisconverter
index bcbe8cfed228ed3f5bb13a53ae166ee925ffc417..4ca90e650fc302a04e4f4d2459dbef5a650033e1 160000 (submodule)
--- a/library/gisconverter
+++ b/library/gisconverter
@@ -1 +1 @@
-Subproject commit bcbe8cfed228ed3f5bb13a53ae166ee925ffc417
+Subproject commit 4ca90e650fc302a04e4f4d2459dbef5a650033e1