qemu: Introduce qemuBuildGlobalControllerCommandLine
qemu: Introduce qemuBuildGlobalControllerCommandLine

Add new function to manage adding the -global controller options to
the command line removing that task from the mainline qemuBuildCommandLine.

Signed-off-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>

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