[msitools] (11 commits) ...wixl: fix a few vala warnings

[Marc-André Lureau <malureau src gnome org>]

Summary of changes:

  902cfec... wixl: add minimal, generic extensions
  052d5ea... wixl: create tables related to user interface
  e0b1457... wixl: add user interface actions
  12b8558... wixl: set default action sequence to -999 rather than -1
  afe0fa7... wixl: install dialog templates for the user interface
  7bb9eec... wixl: parse nodes from user interface dialog files
  fd16209... wixl: add extension directory to path, to find binary files
  a0a0d2c... wixl: load default user interface files when extension enab
  6c61725... Merge branch 'brendonj/msitools-wixl-minimal-ui'
  80edc53... tests: add --ext ui test
  1bbf317... wixl: fix a few vala warnings