gcc: bump 4.8.x series to version 4.8.2

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
apitrace: Reinstated patch

mth: It somehow got separated in the migration to Buildroot 2013.08.1.