wic: fix for #11633 and code cleanup

Hi,

This patchset contains a fix for long standing wic bug: in some cases wic can leave updated fstab in a rootfs directory and produce duplicate fstab entries.

A bit of code cleanup is also included into the patchset.

The following changes since commit 27917fa9e14c1f0b0c3ed20c504772cf7d07b9df:

image.bbclass: use prependVarFlag for postfuncs (2017-06-16 15:11:22 +0300)

are available in the git repository at:

git://git.yoctoproject.org/poky-contrib ed/wip
http://git.yoctoproject.org/cgit.cgi/poky-contrib/log/?h=ed/wip

Ed Bartosh (4):
runner.py: move runtool API to misc.py
wic: flatten directory structure
wic: code cleanup
wic: fix restoring of original fstab

 scripts/lib/wic/engine.py                          |  2 +-
 scripts/lib/wic/filemap.py                         |  8 +---
 scripts/lib/wic/{utils => }/misc.py                | 43 +++++++++++++++---
 scripts/lib/wic/partition.py                       |  3 +-
 scripts/lib/wic/pluginbase.py                      |  3 +-
 scripts/lib/wic/plugins/imager/direct.py           | 11 ++---
 scripts/lib/wic/plugins/source/bootimg-efi.py      |  4 +-
 .../lib/wic/plugins/source/bootimg-partition.py    |  2 +-
 scripts/lib/wic/plugins/source/bootimg-pcbios.py   |  5 +--
 .../lib/wic/plugins/source/isoimage-isohybrid.py   |  2 +-
 scripts/lib/wic/plugins/source/rawcopy.py          |  2 +-
 scripts/lib/wic/plugins/source/rootfs.py           |  2 +-
 scripts/lib/wic/utils/__init__.py                  |  0
 scripts/lib/wic/utils/runner.py                    | 52 ----------------------
 scripts/wic                                        |  2 +-
 15 files changed, 58 insertions(+), 83 deletions(-)
 rename scripts/lib/wic/{utils => }/misc.py (86%)
 delete mode 100644 scripts/lib/wic/utils/__init__.py
 delete mode 100644 scripts/lib/wic/utils/runner.py

--
Regards,
Ed