new package: add package 'RTL8188EU', this should fix #1806

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/Generic/options: disable atvclient
projects/Generic_OSS/options: disable atvclient
projects/Virtual: x86_64: set target cpu to 'x86-64'
projects/Virtual: use 'Generic' addons for both i386 and x86_64
projects/Generic: x86_64: set target cpu to 'x86-64'
projects/Generic: add Generic x86_64 kernel config, based on Generic i386
Merge branch 'master' of github.com:OpenELEC/OpenELEC.tv
installer: make systempartition per default 256MB

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/*/linux: cleanup kernel config

Signed-off-by: Stephan Raue <stephan@openelec.tv>