Pull using the NSPRPUB_PRE_4_2_CLIENT_BRANCH instead of the static tag.

r=leaf

build/mac/build_scripts/MozillaCheckoutList.txt

@@ -7,7 +7,7 @@
 #   mozilla/gc, , 10/25/2000 12:00:00
 #
 
-mozilla/nsprpub,        NSPRPUB_CLIENT_TAG
+mozilla/nsprpub,        NSPRPUB_PRE_4_2_CLIENT_BRANCH
 mozilla/security/nss,   NSS_CLIENT_TAG
 mozilla/security/manager,
 mozilla/accessible,

client.mak

@@ -113,7 +113,7 @@ NSPR_CO_FLAGS=$(MOZ_CO_FLAGS)
 !if "$(NSPR_CO_TAG)" != ""
 NSPR_CO_FLAGS=$(NSPR_CO_FLAGS) -r $(NSPR_CO_TAG)
 !else
-NSPR_CO_FLAGS=$(NSPR_CO_FLAGS) -r NSPRPUB_CLIENT_TAG
+NSPR_CO_FLAGS=$(NSPR_CO_FLAGS) -r NSPRPUB_PRE_4_2_CLIENT_BRANCH
 !endif
 
 CVSCO_NSPR = cvs $(CVS_FLAGS) co $(NSPR_CO_FLAGS)

client.mk

@@ -53,7 +53,7 @@
 # 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 = NSPRPUB_CLIENT_TAG
+NSPR_CO_TAG = NSPRPUB_PRE_4_2_CLIENT_BRANCH
 PSM_CO_TAG = #We will now build PSM from the tip instead of a branch.
 NSS_CO_TAG = NSS_CLIENT_TAG
 LDAPCSDK_CO_TAG = LDAPCSDK_40_BRANCH