Merge pull request #1622 from mtmail/clang-faq-entry

Documentation: add FAQ entry about clang not found

diff --git a/osm2pgsql b/osm2pgsql
index 3a045d7f15adc05d34a719da4266418e9663b322..5f3f736348e0e76b0fb0da22aa55c7aa75ee517e 160000 (submodule)
--- a/osm2pgsql
+++ b/osm2pgsql
@@ -1 +1 @@
-Subproject commit 3a045d7f15adc05d34a719da4266418e9663b322
+Subproject commit 5f3f736348e0e76b0fb0da22aa55c7aa75ee517e