Make sure LIB_SONAME is versioned (.so.X.Y versus .so).

--- src/make/lib.mak.orig	Thu Dec  5 10:27:57 2013
+++ src/make/lib.mak	Fri Apr 25 11:30:28 2014
@@ -42,6 +42,10 @@ else
   endif
 endif
 
+ifeq ($(OSTYPE),OpenBSD)
+  LIBNAME_PAT = $(LIB_FILENAME).${LIBh323_VERSION}
+endif
+
 LIB_SONAME	= $(LIBNAME_PAT)
 
 ifneq ($(P_SHAREDLIB),1)
