Make ns[C]StringKey cooperate better with new string classes (although it doesn't participate in sharing). When created (non-cloned) from a flat string it will be dependent (as it was when created from ns[C]String), but it will copy non-flat strings. b=88411 r=jaggernaut sr=waterson (Complete comment for previous checkin.)

xpcom/ds/nsHashtable.cpp

@@ -755,4 +755,3 @@ nsSupportsHashtable::Reset()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-

xpcom/ds/nsHashtable.h

@@ -357,3 +357,4 @@ protected:
 ////////////////////////////////////////////////////////////////////////////////
 
 #endif
+