package/clamav: bump version to 0.102.0

Release notes:
https://blog.clamav.net/2019/10/clamav-01020-has-been-released.html



Added dependencies to libcurl and libmspack.

Although it is technically possible to build this package without
libcurl it makes no sense because only libclamav would be built by
passing the new configure option --enable-libclamav-only but this would
disable most of the package rendering the scan for viruses impossible.
Therefore we decided to make libcurl a mandatory dependency.

libmspack was added as dependency to avoid building the internally
provided code for this package, we prefer to provide needed libraries
ourselves. Linking against internally-built libmspack is broken anyway
but we do not bother to fix the problem, use system libmspack instead.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>