[RELEASE] Released version 1.5.1

Released version 1.5.1 with the following main changes :
    - BUG/MINOR: config: http-request replace-header arg typo
    - BUG/MINOR: ssl: rejects OCSP response without nextupdate.
    - BUG/MEDIUM: ssl: Fix to not serve expired OCSP responses.
    - BUG/MINOR: ssl: Fix OCSP resp update fails with the same certificate configured twice.     (cherry picked from commit 1d3865b096b43b9a6d6a564ffb424ffa6f1ef79f)
    - BUG/MEDIUM: Consistently use 'check' in process_chk
    - BUG/MAJOR: session: revert all the crappy client-side timeout changes
    - BUG/MINOR: logs: properly initialize and count log sockets
diff --git a/VERDATE b/VERDATE
index 2c7fd38..9395c5b 100644
--- a/VERDATE
+++ b/VERDATE
@@ -1,2 +1,2 @@
 $Format:%ci$
-2014/06/19
+2014/06/24