Fixed bug with getting diagnostic for multiple target frameworks.
The build-time special folders are lower-case
KRE dev install
Write forward slashes into the json files
Add name for path separator arguments
Modify "kpm pack" functional tests to use forward slashes in json files
Peek into project refs to give more details to the IDE
- Added WrappedProject to TargetFrameworkInformation
- Return the wrapped project file or assembly instead of a project reference
where appropriate.

#945
Incremental on mono

- Allow incremental builds of the runtime on mono
- Updated the script blocks to copy things to the right folders
- Moved makefile into klr.mono.managed folder where it belongs. This
allows customizing the mono bootstrapped itself.
Fix null ref when writing assembly to runtime
Fixes https://github.com/aspnet/KRuntime/issues/910

@Chengtian @muratg
Servicing work in progress
Servicing file format update

Changing key=value delimiter to =
Long path redux
- Rely on FilesChanged to trigger new compilations
- Removed most of the directory watching code from roslyn compilations

#961
Fixed regression on mono

- Use HOME instead of ProgramFiles
- Removed tracing for replacement attempts
#974
Made some changes to how DTH sees wrapped projects
- Fix up the dependencies list when returning wrapped csproj and
assemblies.
- Changed how unresolved dependencies were implemented. This allows
a specific IDependencyProvider to say a dependency is resolved, but mark
it as unresolved so that fallback does not happen.
- Remove special logic from the UnresolvedDependencyProvider and made it
a first class property on LibraryDescription.
- Mark projects as unresolved if they do not have a compatible target framework
#945
Preserve original project.json paths in DTH
- Added new WrappedProjectPath to the ProjectReference message. This
allows us to preserve all information so that editors can watch the
relevant project.json and wrapped project.
Tweaked unresolved project logic
- Mark projects as unresolved only if frameworks are specified
and none of them match.
Fixing the casing issue with word Nuget -> NuGet

kpm pack command line help contains the word Nuget. Fixing this to NuGet per Eilon's CR feedback.
Updating to release NuGet.config
Updating to dev NuGet.config