MTP: Put conditional test in gphoto2 monitor for libmtp.
MTP: Put conditional test in gphoto2 monitor for libmtp.

halfline/gvfs,halfline/gvfs,gicmo/gvfs,gicmo/gvfs,gicmo/gvfs,xkahn/gvfs-cmis,philipl/gvfs,gicmo/gvfs,xkahn/gvfs-cmis,xkahn/gvfs-cmis,halfline/gvfs,philipl/gvfs,philipl/gvfs,xkahn/gvfs-cmis