Error: Empty `ph_button` logic section causes a luabind parameter-checking exception

[ProfLander]

When a Lua ph_button object is switched to an empty xr_logic section via its on_press handler, the associated reset_scheme callback will invoke self.object:play_cycle with self.st.anim as nil, terminating the program with a Lua error: C++ Exception popup.
This is the underlying cause of the X8 door crash in #369

Following some research, the underlying CScriptGameObject::play_cycle method is not called; luabind throws an exception before this can happen.
An explanation for this can be found in the luabind manual: As per the LUABIND_NO_ERROR_CHECKING section, overridden functions have their parameters type-checked before call in order to determine the target signature. This throws an exception on type mismatch, which is caught and propagated to our lua_error() handler.

This was a silent failure under the previous version of luabind, but propagates correctly following bf92f5c, resulting in a user-facing X8 door crash.

The surface problem is fixed by 0bd051a, but further issues remain:

• ph_button should perform a validity check on its animation and fail at construction time with a descriptive misconfiguration error
• LUABIND_NO_ERROR_CHECKING prevents luabind from typechecking the parameters of non-overridden C++ functions
  • This is inconsistent, and likely masks various script errors
  • The proper solution is to disable the flag in release builds and fix the resulting script errors, as their scope is potentially quite broad
    • Likely to touch on vector / matrix misuse and other common fail cases, possibly extending to variants of busyhands

Here is the X8 door debugging script used to verify this bug:
x8_door_debug.zip

It adds printf tracing to the relevant xr_logic / ph_button functions, and was used in conjunction with C++ patches to the overloads of CScriptGameObject::play_cycle which added Msg calls to confirm that it was not invoked.