Bug 1179945 - Deal with spaces in file names when generating test archive dependencies. r=bhearsum

--HG--
extra : commitid : EgZLDbNZ4Wa

testing/testsuite-targets.mk

@@ -425,7 +425,7 @@ TEST_PKGS := \
   web-platform \
   $(NULL)
 
-PKG_ARG = --$(1) $(PKG_BASENAME).$(1).tests.zip
+PKG_ARG = --$(1) '$(PKG_BASENAME).$(1).tests.zip'
 
 test-packages-manifest-tc:
 	$(PYTHON) $(topsrcdir)/build/gen_test_packages_manifest.py \