[gparted] (5 commits) ...Disallow resizing btrfs if any of it's mount points are read-only (#10)

[Curtis Gedak <gedakc src gnome org>]

Summary of changes:

  f4994a2... Add read-only flag to mounted file system entries (#10) (*)
  441b393... Add parsing of read-only mount option into mount maps (#10) (*)
  c82883d... Add and set read-only mount flag in the Partition object (# (*)
  f851250... Prevent online resizing of file systems mounted read-only ( (*)
  39d3cd9... Disallow resizing btrfs if any of it's mount points are rea (*)

(*) This commit already existed in another branch; no separate mail sent