Pull kconfig updates from Michal Marek:

 - 'make xconfig' ported to Qt5, dropping support for Qt3

 - merge_config.sh supports a single-input-file mode and also respects
   $KCONFIG_CONFIG

 - Fix for incorrect display of >= and > in dependency expressions

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (44 commits)
  Add current selection check.
  Use pkg-config to find Qt 4 and 5 instead of direct qmake
  kconfig: Fix copy&paste error
  kconfig/merge_config.sh: Accept a single file
  kconfig/merge_config.sh: Support KCONFIG_CONFIG
  Update the buildsystem for KConfig finding Qt
  Port xconfig to Qt5 - Update copyright.
  Port xconfig to Qt5 - Fix goParent issue.
  Port xconfig to Qt5 - on Back clicked, deselect old item.
  Port xconfig to Qt5 - Add(back) one click checkbox toggle.
  Port xconfig to Qt5 - Add(back) lineedit editing.
  Port xconfig to Qt5 - Remove some commented code.
  Port xconfig to Qt5 - Source format.
  Port xconfig to Qt5 - Add horizontal scrollbar, and scroll per pixel.
  Port xconfig to Qt5 - Change ConfigItem constructor parent type.
  Port xconfig to Qt5 - Disable ConfigList soring
  Port xconfig to Qt5 - Remove ConfigList::updateMenuList template.
  Port xconfig to Qt5 - Add ConfigList::mode to initializer list.
  Port xconfig to Qt5 - Add ConfigItem::nextItem to initializer list.
  Port xconfig to Qt5 - Tree widget set column titles.
  ...