Add profiling

[Jesper Öqvist]

It would be useful if JastAddJ could produce profiling data useful for benchmarking. The following profile data would be a good start:

• Total time spent parsing Java
• Total time spent parsing bytecode
• Total time spent checking for errors
• Total time spent generating code
• Number of Java files parsed
• Number of class files parsed

[Jesper Öqvist]

Added -profile option

fixes #2

→ <<cset 2cdfc8eddc00>>