[PATCH 3/3] Move PrereqChecker.isMet() call out of ChooserPage::OnNext() to a separate stage

[Christopher Faylor]

On Fri, Nov 19, 2010 at 02:51:52PM +0000, Jon TURNEY wrote:
>Move PrereqChecker.isMet() call out of ChooserPage::OnNext() to a separate stage,
>so we can put the package chooser page away and indicate progress via the threebar
>status page.
>
>2010-11-19  Jon TURNEY  <jon.turney@dronecode.org.uk>
>
>	* choose.cc (OnNext): Remove PrereqChecker call, instead use new
>	WM_APP_PREREQ_CHECK state of Progress dialog.
>	* threebar.h (WM_APP_PREREQ_CHECK)
>	(WM_APP_PREREQ_CHECK_THREAD_COMPLETE): Add new messages.
>	* threebar.cc (OnActivate, OnMessageApp): Use single bar mode for
>	WM_APP_PREREQ_CHECK state.  Handle new messages.
>	* dialog.h (do_prereq_check_thread): Add prototype.
>	* prereq.cc (isMet, do_prereq_check_thread)
>	(do_prereq_check_reflector, do_prereq_check): Add progress reporting
>	during isMet, and thread containing moved PrereqChecker code.

Looks good.  Please apply.  

Thank you.

cgf