the sourse code of freetype、SDL、SDL_TTL and a test.c

1. create a font directory, copy the freetype, SDL, SDL_TTL source package to the font directory, decompress and compile the static library (or dynamic library);

2. create a test directory under the font directory;

3. create the lib directory and copy related static libraries (or dynamic libraries) to lib;

4. copy the include directory related to each source package to the test directory;

5. modify ROOT_PATH in Makefile.

6. make