Lots of changes.

1.Added Utf8 String.
2.Added RINLINE macro to OO.h.(force inline)
3.String speed up.
4.Added func 'Base64_Decode_Int12' to Base64.
5.Added Tune_ namespace to enum Tune_PitchNameMode.
6.Fixed some bugs.
Combine this with String.h using RTemplate.
Guidance:

    Directory
    |
    |- String.h
    |   |- _String.h
    |- String.c
        |- _String.rc

Please refer to `CVESVP/src/Iterator/_SinuGenericIterlyzer.h`, `CVESVP/src/Iterator/_SinuGenericIterlyzer.rc`, `CVESVP/src/Sinusoidal.c` and `CVESVP/src/Sinusoidal.h`.