Add libtool support.

libzebra and libospfapiclient are now built shared, and linked shared
with the daemons.  This reduces the memory needed when running
multiple daemons; each daemon is at least 150k smaller.  Static
libraries are still built, and libtool should use them on platforms
which don't have shared libaries.  As with autoconf, the user of a
distribution does not need libtool; one just needs that to build from
CVS.

libospf.a is still a non-shared library, and still installed, not
because that makese sense, but because I don't understand why it is
the way it is now.

Note that the tree was tagged 'libtool-before' just before this commit.
diff --git a/ospfd/ChangeLog b/ospfd/ChangeLog
index 26f1fa0..8b5c3ba 100644
--- a/ospfd/ChangeLog
+++ b/ospfd/ChangeLog
@@ -1,3 +1,7 @@
+2004-06-30  Greg Troxel  <gdt@poblano.ir.bbn.com>
+
+	* Makefile.am: Add shlib support.
+
 2004-06-10 Hasso Tepper <hasso@estpak.ee>
 
 	* *: Removed ifdefs HAVE_NSSA.