Attempt to fix windows bustage when building latest c-sdk with mozilla apps as a result of bug 359716 - temporarily change c-sdk tag to blank this time, HEAD doesn't seem to work.

client.mk

@@ -407,7 +407,7 @@ MODULES_all :=                                  \
 #MOZ_CO_TAG          = <tag>
 NSPR_CO_TAG          = NSPRPUB_PRE_4_2_CLIENT_BRANCH
 NSS_CO_TAG           = NSS_3_11_5_RTM
-LDAPCSDK_CO_TAG      = HEAD
+LDAPCSDK_CO_TAG      =
 LOCALES_CO_TAG       =
 
 #######################################################################