Bug 609673: Fix incorrect syntax for ipc plugin tests in testsuite-targets.mk. r=josh a=josh

testing/testsuite-targets.mk

@@ -89,17 +89,19 @@ mochitest-a11y:
 	$(CHECK_TEST_ERROR)
 
 mochitest-ipcplugins:
-#ifdef XP_MACOSX
-#if defined(__i386__)
+ifeq (Darwin,$(OS_ARCH))
+ifeq (i386,$(TARGET_CPU))
 	$(RUN_MOCHITEST) --setpref=dom.ipc.plugins.enabled.i386.test.plugin=true --test-path=modules/plugin/test
-#elif defined(__x86_64__)
+endif
+ifeq (x86_64,$(TARGET_CPU))
 	$(RUN_MOCHITEST) --setpref=dom.ipc.plugins.enabled.x86_64.test.plugin=true --test-path=modules/plugin/test
-#elif defined(__ppc__)
+endif
+ifeq (powerpc,$(TARGET_CPU))
 	$(RUN_MOCHITEST) --setpref=dom.ipc.plugins.enabled.ppc.test.plugin=true --test-path=modules/plugin/test
-#endif
-#else
+endif
+else
 	$(RUN_MOCHITEST) --setpref=dom.ipc.plugins.enabled=true --test-path=modules/plugin/test
-#endif
+endif
 	$(CHECK_TEST_ERROR)
 
 # Usage: |make [EXTRA_TEST_ARGS=...] *test|.