Does not effect mozilla builds. Thunderbird only.

Fix a problem on unix builds with undefined symbols from msgbaseutil_s.

Thanks to dmose@mozilla.org and Jonathan Wilson for the patch

mailnews/import/build/Makefile.in

@@ -71,9 +71,10 @@ SHARED_LIBRARY_LIBS = \
 		$(DIST)/lib/$(LIB_PREFIX)import_s.$(LIB_SUFFIX) \
 		$(DIST)/lib/$(LIB_PREFIX)imptext_s.$(LIB_SUFFIX) \
 		$(DIST)/lib/$(LIB_PREFIX)imp4mail_s.$(LIB_SUFFIX) \
-	        $(DIST)/lib/$(LIB_PREFIX)msgbsutl_s.$(LIB_SUFFIX) \
 		$(NULL)
 
+EXTRA_DSO_LIBS +=  msgbsutl_s
+
 ifeq ($(OS_ARCH),WINNT)
 SHARED_LIBRARY_LIBS += $(DIST)/lib/$(LIB_PREFIX)impEudra_s.$(LIB_SUFFIX)