FB_SCALARPACK(lua_tointeger()) was calling lua_tointeger 3x on color targets

Change-Id: I7b3d73bba5dbc0aa4388b123de11410572fe67c5

Some of the lcd functions had support for multiple screens but this wasn't
very safe since the screen number wasn't bounded within the screens[] array
This adds support for all the lcd functions along with checking that screen#
is bounded properly, adds around 600 bytes to devices with a remote screen
devices without a remote screen lock to SCREEN_MAIN

Change-Id: I618bbc7b3919c7b0ff375fb2d71949d7cab43c87

rli_marshal and rli_copy allow the use of a custom lua function
instead of the built-ins, this custom function can signal to stop
before the whole image is iterated.

Originally it was checking for a return of 0
which was additional overhead for the built-in functions
(which never stop early) as well.
Now custom_transform sets the x & y deltas to 0 to indicate early
exit removing an extra 'if' per cycle and return from all of the
rli_transform functions

The lcd_xxx_bitmap functions all require x, y, w, h, screen these calls
have been consolidated into a single function get_bmp_bounds()

Change-Id: I88de3149c58d1bfb40e9d1a91341fb86cbd63b51

Put rliimage functions into the rb.image metatable instead of the rb. table

Change-Id: Iecdc564c2ea9739656e2025b51bb5d5c62e3dbc1

allows rocklib_img to be excluded if needed

stops rocklib_aux from generating redundant prototypes for
lcd_mono_bitmap[_part]

Change-Id: Ie208ad71ab5f9a7deb026dc01a5b0a0631a0d29c

int is an incompatible type for targets that have 32bit fb_data
need to use FB_SCALARPACK for them

Change-Id: Ib3b5ff19c54d8d1bb76af33d0538a17a71301514

optimize both size and speed
fix invert for color screens

Change-Id: I7edecae32dcb3daf5b3ed984a0e5b3d463269e60

Change-Id: Icd10e4c348deec7729d4a6e2bf1152e1dfc70243