switch to newest osm2pgsql version

diff --git a/osm2pgsql b/osm2pgsql
index 8e5bf4b2ceba46167f3380206ed36c380682c485..27cfb5e37c7bcf8926807baa7c27b1a6e83712c8 160000 (submodule)
--- a/osm2pgsql
+++ b/osm2pgsql
@@ -1 +1 @@
-Subproject commit 8e5bf4b2ceba46167f3380206ed36c380682c485
+Subproject commit 27cfb5e37c7bcf8926807baa7c27b1a6e83712c8