Unify cli encoder info
Merge branch 'plain' into tMod
version.sh
Increase the temporal buffer size for Unicode support

Although the maximum size of one character in UTF-16 is 4bytes,
sizeof(wchar_t) is 2bytes on Windows.
Also, non-ASCII characters requires 2bytes in ANSI code page.
The existing buffer size is insufficient.
Auto keyint

When --keyint is negative value or "auto", keyint_max is set to fps * 10 automatically.
Add a local L-SMASH's importer.h in extras/

since the audio importer relies on it and that file isn't
installed by L-SMASH itself.