Bug 722118 - Android make package fails if --disable-tests. r=blassey

toolkit/mozapps/installer/packager.mk

@@ -335,6 +335,7 @@ else
 GECKO_APP_AP_PATH = $(call core_abspath,$(DEPTH)/mobile/android/base)
 endif
 
+ifdef ENABLE_TESTS
 INNER_ROBOCOP_PACKAGE=echo
 ifeq ($(MOZ_BUILD_APP),mobile/android)
 UPLOAD_EXTRA_FILES += robocop.apk
@@ -344,6 +345,9 @@ INNER_ROBOCOP_PACKAGE= \
   $(JARSIGNER) $(_ABS_DIST)/robocop-raw.apk && \
   $(ZIPALIGN) -f -v 4 $(_ABS_DIST)/robocop-raw.apk $(_ABS_DIST)/robocop.apk
 endif
+else
+INNER_ROBOCOP_PACKAGE=echo 'Testing is disabled - No Robocop for you'
+endif
 
 PKG_SUFFIX      = .apk
 INNER_MAKE_PACKAGE	= \