Fix #610 - Update DebuggerDisplay for renamed fields

[tbolon]

Fix #610.

I used Resharper to find invalid names.
Please note that there are still 3 unresolved symbols:

XMakeBuildEngine\Construction\ProjectOnErrorElement.cs:23 Cannot resolve symbol 'ExecuteTargets'
XMakeBuildEngine\Construction\ProjectOutputElement.cs:22 Cannot resolve symbol 'Name'
XMakeBuildEngine\Construction\ProjectOutputElement.cs:22 Cannot resolve symbol 'ItemName'

I do not know how to fix them (there is no corresponding property)

[AndyGerlicher]

This is great, thank you! I was actually just annoyed by this yesterday and planned to fix this, so great timing!

[rainersigwald]

Thank you for the contribution!

there are still 3 unresolved symbols

Well, those errors date back to at least 2010--the earliest copy of the source I had on hand!

Can you make these changes in a separate commit to deal with them?

• XMakeBuildEngine\Construction\ProjectOnErrorElement.cs: point to ExecuteTargetsAttribute
• XMakeBuildEngine\Construction\ProjectOutputElement.cs: remove Name
• XMakeBuildEngine\Construction\ProjectOutputElement.cs: replace ItemName with ItemType

The latter is based on this comment: https://github.com/Microsoft/msbuild/blob/master/src/XMakeBuildEngine/Construction/ProjectOutputElement.cs#L85

The existing changes look good to me.

[tbolon]

done! 😄

[rainersigwald]

@dotnet-bot test this please

[rainersigwald]

Thanks again.