Require uninstallation for nzbget 9.1

Changes to the post-process script and configuration file
are required
Update sabnzbd to 0.7.11
Add p7zip
Fix pycrypto
Update openssl to 1.0.0k and 0.9.8y
Add nzbget-testing
Update busybox to 1.21.0
Update README
Fix a bad include in 88f5281 toolchain
Fix user for nzbget-testing
Fix sickbeard's post-processing in nzbconfig

A problem could happen when the uid of the post-processing configuration
file was non-existing
Update libpcap to 1.3.0
Update libpcap to 1.3.0
Add attr, libcap2 and dbus
Update transmission to 2.77
Update curl to 7.29.0
Update boost to 1.53.0
Allow kernel modules to be compiled independently and via top-level kernel-modules target
Support parallelization for top level toolchain and kernel-module targets
e.g. Use make toolchains -j 4 to build toolchains for all architectures
in parallel with 4 jobs
Merge branch 'develop' of github.com:SynoCommunity/spksrc into develop