Update for 0.9.15

libraries/liblmdb/CHANGES

 LMDB 0.9 Change Log
 
+LMDB 0.9.15 Release Engineering
+	Fix txn init (ITS#7961,#7987)
+	Fix MDB_PREV_DUP (ITS#7955,#7671)
+	Fix compact of empty env (ITS#7956)
+	Build
+		Don't use -fPIC for static lib
+		Update .gitignore (ITS#7952,#7953)
+		Cleanup for "make test" (ITS#7841)
+		Misc. Android/Windows cleanup
+	Documentation
+		Fix MDB_APPEND doc
+		Clarify mdb_dbi_open doc
+
 LMDB 0.9.14 Release (2014/09/20)
 	Fix to support 64K page size (ITS#7713)
 	Fix to persist decreased as well as increased mapsizes (ITS#7789)