[tools] qemu: update to 0.14.1

[tools] qemu: update to 0.14.1

This patch has not been tested on freebsd. File block/sheepdog.c has
been changed and the patch does no longer apply. Anyone with freebsd who
could test this?

All my other patches regarding the tools upgrade were tested on linux
x64 and produce a working image. Once submitted patches get applied I
will upgrade the remaining tools...

Signed-off-by: Luka Perkov <openwrt@lukaperkov.net>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31175 3c298f89-4303-0410-b956-a3cf2f4a3e73