Fix install-strip target so it actually strips binaries

Makefile.am

@@ -3,6 +3,7 @@ SUBDIRS = man src
 EXTRA_DIST = COMMERCIAL MAINTAINERS TRADEMARK LICENSE Packaging ReadMe-2.4.3 README.md autogen.sh autogen.sh.README touchconfig.sh contrib policy installer
 
 install-data-hook:
+	export INSTALL_STRIP_FLAG
 	prefix="$(prefix)" sysconfdir="$(sysconfdir)" \
         path_to_vi="$(path_to_vi)" path_to_sendmail="$(path_to_sendmail)" \
         ./installer/install.sh

Makefile.in

@@ -798,6 +798,7 @@ uninstall-am:
 
 
 install-data-hook:
+	export INSTALL_STRIP_FLAG
 	prefix="$(prefix)" sysconfdir="$(sysconfdir)" \
         path_to_vi="$(path_to_vi)" path_to_sendmail="$(path_to_sendmail)" \
         ./installer/install.sh

installer/install.sh

@@ -605,6 +605,11 @@ for i in $loosefiles; do
        	fi
 done
 
+if [ -n "$INSTALL_STRIP_FLAG" ] ; then
+  echo "INSTALL_STRIP_FLAG is set, stripping binaries"
+  strip "$TWBIN/siggen" "$TWBIN/tripwire" "$TWBIN/twadmin" "$TWBIN/twprint" 
+fi
+
 #Make extra sure we don't install the unit test binary to sbin
 if  [ -e "$TWBIN/twtest" ] ; then
   rm -f "$TWBIN/twtest"