Building on Ubuntu 15.10 i386 fails unless shlibs signing is turned off

[darealshinji]

I need to apply the following patch on Ubuntu 15.10 (and 15.04), otherwise the i386 builds will fail.
This happended for me when I was building on Launchpad and in a schroot environment on 14.04.

--- a/xulrunner-1.9.2/mozilla/security/nss/cmd/shlibsign/Makefile
+++ b/xulrunner-1.9.2/mozilla/security/nss/cmd/shlibsign/Makefile
@@ -76,18 +76,6 @@
 endif


-# sign any and all shared libraries that contain the word freebl
-
-CHECKLIBS = $(DIST)/lib/$(DLL_PREFIX)softokn3.$(DLL_SUFFIX)
-CHECKLIBS += $(wildcard $(DIST)/lib/$(DLL_PREFIX)freebl*3.$(DLL_SUFFIX))
-ifndef NSS_DISABLE_DBM
-CHECKLIBS += $(DIST)/lib/$(DLL_PREFIX)nssdbm3.$(DLL_SUFFIX)
-endif
-CHECKLOC = $(CHECKLIBS:.$(DLL_SUFFIX)=.chk)
-
-MD_LIB_RELEASE_FILES = $(CHECKLOC)
-ALL_TRASH += $(CHECKLOC)
-

 #######################################################################
 # (5) Execute "global" rules. (OPTIONAL)                              #
@@ -109,16 +97,3 @@

 SRCDIR = $(call core_abspath,.)

-%.chk: %.$(DLL_SUFFIX) 
-ifeq ($(OS_TARGET), OS2)
-   cd $(OBJDIR) ; cmd.exe /c $(SRCDIR)/sign.cmd $(DIST) \
-   $(call core_abspath,$(OBJDIR)) $(OS_TARGET) \
-   $(call core_abspath,$(NSPR_LIB_DIR)) $(call core_abspath,$<)
-else
-   cd $(OBJDIR) ; sh $(SRCDIR)/sign.sh $(call core_abspath,$(DIST)) \
-   $(call core_abspath,$(OBJDIR)) $(OS_TARGET) \
-   $(call core_abspath,$(NSPR_LIB_DIR)) $(call core_abspath,$<)
-endif
-
-libs install :: $(CHECKLOC)
-
--- a/xulrunner-1.9.2/mozilla/security/manager/Makefile.in
+++ b/xulrunner-1.9.2/mozilla/security/manager/Makefile.in
@@ -310,6 +310,8 @@
    $(MAKE) -C pki $@
 endif

+SKIP_CHK=1
+
 libs::
 ifndef MOZ_NATIVE_NSS
    $(NSSMAKE) -C $(topsrcdir)/security/coreconf $(DEFAULT_GMAKE_FLAGS)