u-boot: move patches to versioned patchdir

Signed-off-by: Stephan Raue <stephan@openelec.tv>
samba: update to samba-3.6.11

Signed-off-by: Stephan Raue <stephan@openelec.tv>
nettle: update to nettle-2.6

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libX11: fix build

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xf86-video-dove: add automake-1.13 patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>
linux: update to linux-3.7.4

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libX11: depends on xproto and xproto-host

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libX11: dont include target headers for building hosttools

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