* Respect generator projects in slngen
<Project>
<PropertyGroup>
+ <SlnGenSolutionFolder Condition="'$(IsGeneratorProject)' == 'true'">gen</SlnGenSolutionFolder>
<SlnGenSolutionFolder Condition="'$(IsReferenceAssembly)' == 'true'">ref</SlnGenSolutionFolder>
<SlnGenSolutionFolder Condition="'$(IsTestProject)' == 'true' or '$(IsTestSupportProject)' == 'true'">tests</SlnGenSolutionFolder>
<SlnGenSolutionFolder Condition="'$(SlnGenSolutionFolder)' == ''">src</SlnGenSolutionFolder>