don't store log messages, this feature is not used by anyone
add access function to library state so we can access it in pbl-yaml
recognize pbl-yaml
add pbl-yaml, a commandline-wrapper around perl-Bootloader using YAML files
made argument passing a bit more clear
extend syntax to handle variable length argument lists
fix typo
added --version option
fix typo
introduce perl-Bootloader-YAML subpackage
new version: 0.800
cleanup errors messages during installation

cleanup errors messages during installation due to various config
are not created. they are handled as warnings and will not return any
config information.
skip updating if grub2-mkconfig not found

In update-bootloader, we should skip updating grub2 if there's no
grub2-mkconfig utility found. This is a protection from running
update-bootloader while no corresponding grub2 package gets installed
(bnc#858268).
fix confusion between Tools::GetDeviceMapping() and Core::GetDeviceMapping() (bnc #858268)
version 0.801
Merge pull request #21 from WenhuaChang/master

cleanup errors messages during installation
added workaround to avoid double rootflags entry (bnc #858853)
fix checking wrong grub2-editenv path

fix checking wrong grub2-editenv path, it's not executed at all and
caused default menu entry not determined. (bnc#861469)
Merge pull request #22 from WenhuaChang/master

fix checking wrong grub2-editenv path
new version 0.803