qemuxml2argvtest: Reorder functions
qemuxml2argvtest: Reorder functions

testCompareXMLToArgv will soon need to call a few function which are
defined further in the code. Let's move them up a bit.

Signed-off-by: Jiri Denemark <62bdf77dc47919a4d59a91822129d14633cfca81@redhat.com>

jfehlig/libvirt,taget/libvirt,VenkatDatta/libvirt,libvirt/libvirt,datto/libvirt,zippy2/libvirt,jardasgit/libvirt,jfehlig/libvirt,andreabolognani/libvirt,taget/libvirt,datto/libvirt,datto/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,nertpinx/libvirt,taget/libvirt,zippy2/libvirt,eskultety/libvirt,crobinso/libvirt,jfehlig/libvirt,jfehlig/libvirt,jardasgit/libvirt,andreabolognani/libvirt,olafhering/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,olafhering/libvirt,olafhering/libvirt,crobinso/libvirt,crobinso/libvirt,eskultety/libvirt,taget/libvirt,libvirt/libvirt,libvirt/libvirt,zippy2/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,eskultety/libvirt,VenkatDatta/libvirt,eskultety/libvirt,crobinso/libvirt,datto/libvirt,VenkatDatta/libvirt,eskultety/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,olafhering/libvirt,datto/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,taget/libvirt,jardasgit/libvirt,nertpinx/libvirt,zippy2/libvirt,nertpinx/libvirt,andreabolognani/libvirt,libvirt/libvirt