* Enable 'package' and 'string' Lua libraries.
* Change 'package' library to only load for color LCD radios.
Exclude 'string' library to match 2.8 functionality.
* Fix memory leaks when using 'USB Storage (SD)' connection.
- Lua state 'cache' allocated to both lsScripts and lsWidgets; but only one was being released.
- Default theme bitmaps being reloaded without releasing previously allocated memory.
* Fix icons.
* chore(lua): revert useless c light function change
This change was part of the eLua LTR patches (based on 5.1), whereby this feature was already integrated in Lua 5.2.
* feat(lua): port of NodeMCU Lua53 read-only tables
# Conflicts:
# radio/src/lua/CMakeLists.txt
# radio/src/lua/api_general.cpp
* fix(nv14): missing SDRAM definition
* fix: l_mathop
* fix: use float functions in drawPower()
* fix: ltable resize
* fix: correct name is "bit32"
* fix: first Lua context must be closed last
As the lookup cache is attached to that one
* Revert to Lua using double
* Ensure byte-code compatibility
* Fix possible compatibility issue with `lua_typename`/`luaL_typename`
* Fix Bitmap symbol table
* Re-add table lib for COLORLCD
* Lua: All usage of double converted to float. printf("%f") still uses promotion to double, (floating point va_args are always promoted to double)
Speed improvements:
* reordering of rotable to put most used tables at the top
* caching of last found global table
Use real pointer to rotable instead of misusing void* to pass integer value
Lua internal traces now turned on by TRACE_LUA_INTERNALS cmake option
* Replaced floating point division with multiplication (where possible), the hardware FPU is much faster at multiplication vs division.
stb_image: enabled STBI_NO_HDR and STBI_NO_LINEAR (removes code that we don't need)
Fixes#2921: getValue() now also returns pilot position
Fixes#3062: Close any Lua open files when radio powers off
Fixes#3095: Lua string library added (only 6k bytes of flash used)
Re #3095: luaGetVersion() also returns version as numbers
(Ported from master 7ef790d3..4d0bd14ad and squashed into one commit)
