* Snap of sln reader/writer from https://github.com/mono/monodevelop
* Remove unnecessary code
* Create a new test asset with an sln file because adding an sln to an existing one broke other tests
* Remove commented out line
* Removing unneeded PropertyGroup per PR comments
* Update the license
* Fixing the license
This adds LZMA to the THIRD-PARTY-NOTICES list for CLI. Since we've
modified the SDK in porting it to .NET Core and minor bugfixes we've
also been advised to add the .NET Foundation copyright header.
Richard Lander
Zlatko Knezevic
Justin Goshi
Eric St. John
Gaurav Khanna