bangarang: fix build with gcc 4.7
vidalia: fix build with gcc-4.7
youtubeDL: update from 2014.01.23.4 to 2014.01.30.2
Update/fix merkaartor to 0.18.1
Use gcc-4.6.0 for avr-gcc-libc
dhcpcd: Update to 6.2.1

Dhcpcd now has integration with udev, so it should no longer be a
problem if udev renames an interface while dhcpcd is running.
Adding missing unistd.h includes
Update libcangjie 1.1