another try at portable symlinking

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@215 f882894a-f735-0410-b71e-b25c423dba1c

plugins/Makefile.am

@@ -138,7 +138,7 @@ $(check_tcp_programs): check_tcp
 
 install-exec-hook:
 	cd $(DESTDIR)$(libexecdir) && \
-	for i in $(check_tcp_programs) ; do rm $$i; ln -sf check_tcp $$i ; done
+	for i in $(check_tcp_programs) ; do rm -f $$i; ln -sf check_tcp $$i ; done
 
 clean-local:
 	rm -f $(check_tcp_programs)