Reads eff_dir with space in the path string

[tleppala]

Reads string with space in in. Does not work if string is longer than allocated buffer, but whole operation fails to use eff files anyway.

[jaakkojulin]

While it is true that use of efficiency files fails if efficiency directory is not read properly, it still might be worth checking after fgets() that input->eff_dir length with strlen() is shorter than EFF_DIR_LENGTH - 1 and giving a relevant error message in that case.

Also might be good idea to skip over spaces before (or after, but it is easy to cause memory issues in C if doing so) fgets().