Updated the NSPR tag to NSPR_HEAD_20071218 to pick up the fix for bug 404399 "PR_StringToNetAddr extremely slow on Mac OS X". The bug is blocking1.9+.

client.mk

@@ -410,7 +410,7 @@ MODULES_all :=                                  \
 # For branches, uncomment the MOZ_CO_TAG line with the proper tag,
 # and commit this file on that tag.
 #MOZ_CO_TAG          = <tag>
-NSPR_CO_TAG          = NSPR_HEAD_20071016
+NSPR_CO_TAG          = NSPR_HEAD_20071218
 NSS_CO_TAG           = NSS_3_12_ALPHA_2B
 LDAPCSDK_CO_TAG      = LDAPCSDK_6_0_3_CLIENT_BRANCH
 LOCALES_CO_TAG       =