Updating build.sh to latest
Updating TokenProviderTests to use GetAuthenticatedIdentity instead of creating GenericIdentity
Updating SyncAction_WithException to not test for exception message
Skipping PropertyHelper_WorksForStruct on Mono until further
investigation.
Fix for #1192 - Support customizing reflected model through attributes

This adds support for attributes which interact with reflected model.
These conventions are applied after all of our built-in constructs so that
you can see and modify the results.
Removing declaration expressions
Adding support for ViewLocationExpanders to allow modifying view locations
without changing the view engine.

Fixes #1039
Reacting to Razor changes
Removing Overloading and Automatic verb-mapping

This change removes WebAPI-style method parameter overloading and the
automatic mapping of 'unnamed' actions based on method names. For all
practicaly purposes, this change restores the MVC5 behavior for action
selection.

WebAPI-style overloading will be brought back in the future via a set of
opt-in constructs.
Fix for #975 - Implementing IActionConstraint and ActionMethodSelectorAttribute

IActionConstraint follows a provider model similar to filters. The
attributes that go on actions/controllers can be simple metadata markers,
the 'real' constraint is provided by a set of configurable providers. In
general the simplest thing to do is to be both an
IActionConstraintMetadata and IActionConstraint, and then the default
provider will take care of you.

IActionConstraint now has stages based on the Order property. Each group
of constraints with the same Order will run together on the set of
actions. This process is repeated for each value of Order until we run out
of actions or run out of constraints.

The IActionConstraint interface is beefier than the equivalent in legacy
MVC. This is to support cooperative coding between sets of constraints
that know about each other. See the changes in the sample, which implement
webapi-style overloading.