flac: Update to 1.3.3

flac: Update to 1.3.3

- Update from 1.3.2 to 1.3.3
- Update rootfiles
- Changelog
    General:
        Fix CPU detection (Janne Hyvärinen).
        Switch from unsigned types to uint32_t (erikd).
        CppCheck fixes (erikd).
        Improve SIMD decoding of 24 bit files (lvqcl).
        POWER* amnd POWER9 improvements (Anton Blanchard).
        More tests.
    FLAC format:
        (none)
    Ogg FLAC format:
        (none)
    flac:
        When converting to WAV, use WAVEFORMATEXTENSIBLE when bits per
         second is not 8 or 16 (erikd).
        Fix --output-prefix with input-files in sub-directories (orbea).
    metaflac:
        (none)
    plugins:
        (none)
    build system:
        Cmake support (Vitaliy Kirsanov, evpobr).
        Visual Studio updates (Janne Hyvärinen).
        Fix for MSVC when UNICODE is enabled (lvqcl).
        Fix for OpenBSD/i386 (Christian Weisgerber).
    documentation:
        (none)
    libraries:
        (none).
    Interface changes:
        libFLAC:
            (none)
        libFLAC++:
            (none)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>