Rename executable

[stepanzubkov]

Now executable is florgon-cc. I don't like it because it is too long (9 letters and one dash symbol). Executable should not contain any non-letters symbols and should be short. Here are alternatives:

• fcc - Very short, but similiar with gcc and fc commands, so can be confused with it.
• flcc - Short, simple to type, no similiar commands.
• flocc - Short, simple to type, looks like a normal word

May be also rename pypy package name?