blkid: escape quotes in the output

 # e2label /dev/loop0 'La"bel'
 # blkid -p /dev/loop0
 /dev/loop0: LABEL="La"bel"  ....

new version:

 /dev/loop0: LABEL="La\"bel" ....

Reported-by: Phillip Susi <psusi@ubuntu.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
docs: add note about make distcheck

Signed-off-by: Karel Zak <kzak@redhat.com>
blkid: simple typo

Signed-off-by: Karel Zak <kzak@redhat.com>
hexdump: add basic tests

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
hexdump: use list.h queues and rewrite redundant for cycles

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: cleanup of redundant symbols/repeating literals

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: rewrite addfile()

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: rewrite get()

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: rewrite next()

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump:rewrite add()

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: rewrite rewrite()

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: rewrite escape()

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: rewrite() formatting improvements

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: formatting and variable name cleanup

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: rewrite addfile() to use getline()

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: rename next{fs,fu,pr} to {fs,fu,pr}list

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: minor formatting improvements

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: simplify newsyntax arguments

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: use xstrncpy in add()

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
hexdump: use GNU case ranges where possible

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>