Fix recovery filesystem table output to log

Use fprintf when printing to a specified stream.

Change-Id: I863e3b570e3cf560deec9e8bb39cb339f40ae94c
Remove (un)mount option for datamedia partitions

When /sdcard is /data/media, it can be formatted but it cannot be
mounted/unmounted independently of /data (aside from creating or
destrying the symlink). This removes /sdcard from the mountable
volumes list, but leaves it as a formattable partition.

Change-Id: If59e4516a12da4589ffb0dbd19702f219260370e
Fix use of stat and statfs in nandroid.c

Use statfs for volumes and stat for files. This also fixes
occasional calls of stat on statfs structures and vice versa.

Change-Id: I734ba37a1d757b30ef2cd1e5f0c9845ec89f98e9
Fix compiler warning: redefinition in extendedcommands.c

ITEM_APPLY_SDCARD is already defined in recovery_ui.h, fortunately
also as 1.

This suggestion comes from Phil3759.

Change-Id: I9ac370ca9640d61b6b96f60954d35f7aa458d75b