[SCM] libdvdcss/master: Update changelog.

[Fabian Greffrath]

> About these latest changes, I removed the build dependency on
> dh-autoreconf because a) it wasn't necessary, and b) because if we are

It is, because we add
libdvdcss_la_CFLAGS = -fvisibility=hidden
in src/Makefile.am
through debian/patches/symbol-visibility.patch.

Please get this right again. The flag could get added globally to CFLAGS
in debian/rules, for example.

 - Fabian