action: extend logging to handle log if action TRUE and log if action FALSE

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
action: update action option parsing to use ACTION_LOG_{NONE|VERBOSE}

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
action: make action_read_file use ACTION_LOG_{NONE|VERBOSE}

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: add -true_action option

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: add -false_action option

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: add -action_file as synonym for -af

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: add -verbose_action_file as synonym for -vaf

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: fix read_action_file to use ACTION_LOG_{NONE|VERBOSE}

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: add -true_action_file option

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: add -true-action-file option

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: fix usage of "_" in new options

Gah, I like using "_" as the separator between words in
options.  But, a long time ago I noticed I'd ended up with "-"
as the separator in the majority case, and so I'm stuck with
"-" as the separator.

Fix verbose_option, true_option, false_option, action_file
and verbse_action_file.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
mksquashfs: add -false-action-file option

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>