* Update for dev 16.0

* Finish targeting `net472` for future dev16 work. (#5719)

* don't set `$(TargetFramework)` on non-SDK projects

* HostedCompilerServer and PEVerify should explicitly be `net472`

* don't copy System.ValueTuple.dll for tests because it's not deployed any more

* add net472 support where System.ValueTuple can come from mscorlib

* force target framework 4.6 on Linux/Mono

Merge master to dev16.0

* Starting refactoring of ConstraintSolver.fs
Signed-off-by: Nrealvictorprm <mueller.vpr@gmail.com>

* more refactoring of ++ operator
Signed-off-by: Nrealvictorprm <mueller.vpr@gmail.com>

* Trying to apply correct style.
Signed-off-by: Nrealvictorprm <mueller.vpr@gmail.com>

* replaced most usage of IterateD + styling
Signed-off-by: Nrealvictorprm <mueller.vpr@gmail.com>

* More style cleanup to reduce diff.
Signed-off-by: Nrealvictorprm <mueller.vpr@gmail.com>

* big restore of original spacing
Signed-off-by: Nrealvictorprm <mueller.vpr@gmail.com>

* Applying review.
Signed-off-by: Nrealvictorprm <mueller.vpr@gmail.com>

* whitespace fix

* update FSComp.fs

Merge master to dev16.0

Merge dev15.9 to dev16.0

Merge master to dev16.0

Loc Checkin

* Add tests

* Add detection of generic types in rec modules

* Fix large ranges

* update FCS

* I can't add up

* fix build

* test fix

* fix tests

* fix tests

* fix tests

Merge master to dev16.0

Merge master to dev16.0

* Fixed referencing cross projects (#5698)

* Fixed referencing cross projects

* Fixed legacy project referencing CPS style project

* Fixed tooling issues when changing solutions (#5721)

Merge master to dev16.0

Directly reference Microsoft.VisualStudio.ProjectSystem from the vside nuget feed. Resolves MEF composition issues (#5806)

Merge master to dev16.0

* Cleanup checkTypeDef

* Use error recovery for hidden

* Return early

Merge dev15.9 to dev16.0

* Attempt to fix linux build

* Clean up

Merge master to dev16.0

* Add decoded ILAttribute representation

* Remove ILAttribute.Data

* Add docs

* Format indentation on paste

* Fix pasting when next line should be indented

* Initial pass at 'Formatting' page

* Add some tests

* Fix tests

Merge master to dev16.0

* Remove one "impossible" error - fixes #5745

* Fix tests

* Add test for #5745

* Fix "build from source"

Merge master to dev16.0