setup with experimental libsolv-based dependency solving

[Jon Turney]

On 23/11/2017 18:08, Jon Turney wrote:
> On 30/10/2017 15:52, Jon Turney wrote:
>> On 25/10/2017 20:18, Jon Turney wrote:
>>>
>>> This has a lot of internal changes, so could use some wider testing. 
>>> Please test.
> [...]
>> I've replaced these with:
> [...]
> I've replaced these with:
[...]

I've replaced these with:

      https://cygwin.com/setup/setup-2.884-45-gb87162.x86.exe
      https://cygwin.com/setup/setup-2.884-45-gb87162.x86_64.exe

Changes compared to setup-2.882-62-g75a2e0:

libsolv related:
- When test versions are enabled, a test version is no longer preferred 
over a non-test version with a higher version
- Default solutions are now identified in the problem report, and 
applied if the user chooses to accept them
- Meaningless '.any' arch suffix to package names is suppressed in the 
problem report
- Reinstall tasks are preserved in the chooser when going back from the 
dependency problem page

other:
- Query the user for action to take if a corrupt local file is found
- Validate package hash after download
- Rebase to include changes in 2.883 and 2.884

I'm interested in opinion on what else is needed, before this can be 
released as 2.885