Add binding for new `gcc_jit_lvalue_get_name` function#54

antoyo merged 2 commits intorust-lang:masterrust-lang/gccjit.rs:masterfrom

GuillaumeGomez:gcc_jit_lvalue_get_nameGuillaumeGomez/gccjit.rs:gcc_jit_lvalue_get_nameCopy head branch name to clipboard