On a Mac using shared creates libnvim-test.dylib which cannot be found
by the hardcoded .so extension in helpers.moon, causing the unittests to
fail. However, using module creates libnvim-test.so, allowing the tests
to run. There will still be problems running the tests on windows,
because both shared and module create dll file which will not be found
by in helpers.moon.
Tests will be written using the [moonscript](http://moonscript.org/) language,
a lua 'dialect' that is whitespace-significant and has a syntax similar to
coffeescript. The test framework used is [busted](http://olivinelabs.com/busted/),
a bdd framework for lua/moonscript.
Luajit has a nice ffi module, which lets lua programs link shared libraries and
call it's functions without writing any C code.
To take advantage of this fact for testing C functions, a new target was added
to CMakeLists.txt, which compiles neovim as a shared library that is loaded by
the process running the tests.
This commit adds necessary code for downloading and installing a lua package
manager(luarocks) locally. It wasn't added as a subtree because there are quite
a few blobs in its source tree.
- Cleanup source tree, leaving only files necessary for compilation/testing
- Process files through unifdef to remove tons of FEAT_* macros
- Process files through uncrustify to normalize source code formatting.
- Port the build system to cmake
