InputCommon: Change default hotkey for home and start.

We already use ALT + ENTER for toggling fullscreen.
But as ENTER is both home and start, this buttons will always
also be triggered on toggling fullscreen. Now we check for
those buttons if ALT is not pressed.
So now we're able to toggle fullscreen without pressing home or start.

Source/Core/Core/HW/GCPadEmu.cpp

@@ -138,10 +138,10 @@ void GCPad::LoadDefaults(const ControllerInterface& ciface)
 	set_control(m_buttons, 3, "S"); // Y
 	set_control(m_buttons, 4, "D"); // Z
 #ifdef _WIN32
-	set_control(m_buttons, 5, "RETURN"); // Start
+	set_control(m_buttons, 5, "!LMENU & RETURN"); // Start
 #else
 	// OS X/Linux
-	set_control(m_buttons, 5, "Return"); // Start
+	set_control(m_buttons, 5, "!`Alt_L` & Return"); // Start
 #endif
 
 	// stick modifiers to 50 %

Source/Core/Core/HW/WiimoteEmu/WiimoteEmu.cpp

@@ -895,9 +895,9 @@ void Wiimote::LoadDefaults(const ControllerInterface& ciface)
 	set_control(m_buttons, 5, "E"); // +
 
 #ifdef _WIN32
-	set_control(m_buttons, 6, "RETURN"); // Home
+	set_control(m_buttons, 6, "!LMENU & RETURN"); // Home
 #else
-	set_control(m_buttons, 6, "Return"); // Home
+	set_control(m_buttons, 6, "!`Alt_L` & Return"); // Home
 #endif
 
 	// Shake