[3880] Compilation fix.

src/lib/Makefile.am

@@ -1,3 +1,3 @@
 # The following build order must be maintained.
-SUBDIRS = exceptions util log hooks cryptolink dns cc dhcp config stats \
-          asiolink asiodns testutils dhcp_ddns dhcpsrv
+SUBDIRS = exceptions util log hooks cryptolink dns cc asiolink dhcp config stats \
+          asiodns testutils dhcp_ddns dhcpsrv