5166 sendmail package should be replaceable

@@ -31,5 +31,13 @@
 CERRWARN +=     -_gcc=-Wno-uninitialized
 CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
 CERRWARN +=     -_gcc=-Wno-empty-body
 CERRWARN +=     -_gcc=-Wno-unused-variable
 DBMDEF=         -DNDBM -DNEWDB -DNIS -DUSERDB -DMAP_REGEX -DLDAPMAP
+
+ROOTLIBSMTPSM = $(ROOTLIB)/smtp/sendmail
+
+$(ROOTLIBSMTPSM):
+        $(INS.dir)
+
+$(ROOTLIBSMTPSM)/%: %
+        $(INS.file)