No bug: Ignore idutils index files wherever they appear; ignore Spide…

…rMonkey test logs. r=jorendorff

.hgignore

@@ -4,6 +4,7 @@
 ~$
 \.pyc$
 (^|/)TAGS$
+(^|/)ID$
 (^|/)\.DS_Store$
 
 # User files that may appear at the root
@@ -12,7 +13,6 @@
 ^configure$
 ^config\.cache$
 ^config\.log$
-^ID$
 
 # Empty marker file that's generated when we check out NSS
 ^security/manager/\.nss\.checkout$
@@ -27,6 +27,8 @@ _OPT\.OBJ/
 # SpiderMonkey configury
 ^js/src/configure$
 ^js/src/autom4te.cache$
+# SpiderMonkey test result logs
+^js/src/tests/results-.*\.(html|txt)$
 
 # Java HTML5 parser classes
 ^parser/html/java/(html|java)parser/