Bug 1048770: Fix member types of |BluetoothInterfaceRunnable{1,3}<>| (under bluetooth2/), r=btian

When sending a |BluetoothInterfaceRunnable3<>| to the main thread,
in the case of BluetoothSocketResultHandler, the connect and accept
operations transfer string objects by reference from the I/O thread.
When the reference is accessed, the actual string might be removed
already.

The patch fixes the problem by storing the strings as value in the
runnable object.
Bug 1048770: Rename |ConnectResultHandler| to |ConnectSocketResultHandler| (under bluetooth2/), r=btian

The linker mixes up |ConnectResultHandler| from BluetoothSocket.cpp
and BluetoothHfpManager.cpp. Consequently one of them gets removed
when linking libxul.so.

This patch works around the problem by renaming |ConnectResultHandler|
in BluetoothSocket.cpp to |ConnectSocketResultHandler|.