main/gcc: rebuild using ld.bfd

fixes #3616
main/libc-dev: split bsd compatibility headers to separate subpkg

also refresh sys/queue.h and add sys/tree.h
testing/youtube-dl: upgrade to 2014.12.12.1
main/adwaita-icon-theme: upgrade to 3.14.1
main/btrfs-progs: upgrade to 3.17.3
main/ccache: upgrade to 3.2
main/gnutls: upgrade to 3.3.11
main/libass: upgrade to 0.12.0
main/libguess: upgrade to 1.2
main/libguess: remove needless patch file
main/libksba: upgrade to 1.3.2