[SMB] Support querying filesystem size and free space
[SMB] Support querying filesystem size and free space

Requires libsmbclient >= 3.2.0

Fixes rfe bug 565337

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