b=903270 set thread name for initial event of NS_NewNamedThread() r=dougt

--HG--
extra : transplant_source : %E7%24%5Be%ED.%F3HH%9A%9E%02r%EB%29%CD%EDf%09%F1
b=903270 remove default null initial event parameter from NS_NewNamedThread() call site r=doublec

--HG--
extra : transplant_source : b%B5%DF%BFTQ%DE%FE%DC%09l%21%ACzA%C7a%27%90%60
Bug 907619. Ensure GtkSelectionData is freed. r=karlt

--HG--
extra : transplant_source : 0%9F%0E%DA%60%B1%B0%02%88%82%25.e%FBGE%A2%7BU%0A
Bug 907619. Part 2: Refcount clipboard-contents retrieval contexts to avoid dangling pointers. r=karlt,roc

--HG--
extra : transplant_source : %DACvv%00%0C%EB%EF%D6%5E%93I%1B%BD%F0%AE%0A%9F%AE%D6
Bug 907619. Part 3: Retry on EINTR instead of treating it as a timeout. r=karlt

--HG--
extra : transplant_source : b%3D%CB%3A%92%2B%E0%2A%ED%8C%11U%DC%CE%119m3%1A%FC