report to ftpsync a patch to avoid the use the lockfile programm

[Simon Paillard <simon.paillard@resel.enst-bretagne.fr>]

Since the lockfile programm used in the new ftpsync requires the
installation of procmail package on debian, and might not be available
on some other platforms, here is a tiny modification to avoid this
dependancy.

-- 
Simon Paillard

diff --git a/bin/ftpsync b/bin/ftpsync
index ec06c7c..f827e6a 100755
--- a/bin/ftpsync
+++ b/bin/ftpsync
@@ -233,8 +233,6 @@ FULLLOGS=${FULLLOGS:-"false"}
 
 # How to rotate our log
 SAVELOG=${SAVELOG:-"savelog -t -c 14"}
-# Lockfile program
-LOCKFILE=${LOCKFILE:-"lockfile"}
 
 # Our lockfile
 LOCK=${LOCK:-"${TO}/Archive-Update-in-Progress-${MIRRORNAME}"}
@@ -338,7 +336,7 @@ mkdir -p "${TO}/project/trace"
 touch "${UPDATEREQUIRED}"
 
 # Check to see if another sync is in progress
-if ${LOCKFILE} -! -l 43200 -r 0 "${LOCK}"; then
+if [ "`find ${LOCK} -maxdepth 1 -cmin -720`" != ""]; then
         error "Unable to start rsync, lock file still exists"
         exit 1
 fi