fix reading of MD redundcancy settings in grub/grub2

1. Ensure enable_md_array_redundancy is set when reading existing
configuration.

2. Show checkbox in wizard as enabled only when it is really enabled.

References: bnc#842919

Signed-off-by: Andrey Borzenkov <arvidjaar@gmail.com>
do not use internal for debug output
fix pbl communication in chroot
fix typo
Merge pull request #28 from yast/strip_direct_pbl

fix pbl communication in chroot
fix wrong method call
Using 'Kernel' Yast library for handling modules loaded on boot

-  See bnc#838185
Merge pull request #29 from kobliha/modules_loaded_on_boot

Using 'Kernel' Yast library for handling modules loaded on boot
fix typo in function name
handle data also if it is boolean
Merge pull request #26 from yast/decrease_log_verbosity

do not use internal for debug output
always use local parted. It allows to have target system without parted.
Merge pull request #30 from yast/strip_direct_pbl

Strip direct pbl
Merge pull request #31 from yast/local_parted

always use local parted. It allows to have target system without parted.
removed VERSION file
fix "undefined method `split' for true:TrueClass" with grub2-efi

Fix error that pops up when using yast2 bootloader in GRUB2-EFI mode.
Selecting 'Boot Loader Options' and adjusting the options results in the above
error and the changes are lost.  (bnc#855568)
Merge pull request #33 from lpechacek/true_no_split

fix "undefined method `split' for true:TrueClass" with grub2-efi
handle problematic conversion of perl undef in perl-json BNC#858461
changes
Merge pull request #34 from yast/fix_bnc#858461

Fix bnc#858461