re-instate the installation of static libraries

src/Makefile.common

@@ -16,3 +16,17 @@ AM_CPPFLAGS = -g -I$(top_srcdir)/include \
         $(NULL)
 
 INCLUDE_COMMON = -I$(top_srcdir) -I$(top_srcdir)/include -I.
+
+# Required by the install-zmap-static-libs target.
+LIBS_ZMAP = $(top_builddir)/.libs/libZMapApp.a \
+	$(top_builddir)/.libs/libZMapApp.la \
+	$(top_builddir)/.libs/libZMap.a \
+	$(top_builddir)/.libs/libZMap.la \
+	$(top_builddir)/.libs/libZMapThr.a \
+	$(top_builddir)/.libs/libZMapThr.la \
+	$(top_builddir)/.libs/libZMapXML.a \
+	$(top_builddir)/.libs/libZMapXML.la \
+	$(top_builddir)/.libs/libPFetch.a \
+	$(top_builddir)/.libs/libPFetch.la \
+	$(NULL)
+