Bug 1055114 - convert GMPVideo{Encoder,Decoder} methods to take UniquePtr arguments where appropriate; r=cpearce
Bug 1056263 - remove unneeded configure checks for ssize_t, stat.st_blksize, and siginfo_t; r=mshal

js/src/ retains the ssize_t check because ctypes needs it.
Bug 1055281 - check for existence of paths in LOCAL_INCLUDES in moz.build; r=mshal