buildroot

package/wavpack: security bump to version 5.1.0

Fixes:
 - CVE-2016-10169: global buffer overread in read_code / read_words.c
 - CVE-2016-10170: heap out of bounds read in WriteCaffHeader / caff.c
 - CVE-2016-10171: heap out of bounds read in unreorder_channels / wvunpack.c
 - CVE-2016-10172: heap oob read in read_new_config_info / open_utils.c

[Peter: add CVE references]
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit dbc108d6729a082d247910d1476df358570036ab)