TreeMaker-5.0.1-bp156.2.2

- Fix "launchable" and add screenshot in AppStream metadata.
- Warn at build time if hhp2cached source version doesn't match
  the wxWidgets we build with.
- Run spec-cleaner.

- Initial release based on version 5.0.1.
- Add patches to fix build:
  * Allow-building-with-system-wxWidgets.patch
  * Use-explicit-this-for-dependent-base-members.patch
  * Fix-missing-declaration-of-wxPageSetupData-in-tmwxAp.patch
  * Replace-call-to-protected-wxWindow-ProcessEvent-by-H.patch
  * Stop-using-wxT-with-non-literals.patch
  * Explicitly-cast-argument-to-wxConfigBase-Write.patch
  * Let-tmwxTextCtrl-constructor-take-a-wxString.patch
  * Replace-tmwxDoc-GetPrintableName-call-by-GetDocument.patch
  * Inline-private-wxDocChildFrameAny-OnActivate.patch
  * Fix-flag-arguments-to-wxFileDialog-constructor.patch
  * Try-to-resolve-missing-members-in-tmwxHtmlHelpFrame.patch
  * Don-t-set-private-wxDialog-m_modalShowing.patch
  * Resolve-ambiguous-call-to-tmOnAssert.patch
  * Let-tmwxHtmlHelpController-CreateHelpWindow-match-wi.patch
  * Link-with-GTK-libraries.patch
  * Internalize-g_openDialogs-in-tmwxOptimizerDialog_gtk.patch
- Add patches to fix some bugs:
  * Fix-annoying-warning-about-suspiciuos-cast.patch
  * Fix-popups-about-ignored-flags-at-startup.patch
  * Fix-crash-on-opening-help.patch
  * Make-some-build-options-configurable.patch