No longer calling into .Net. Using powershell to manipulate project directly. Easier to test. This idea came from Microsoft.Bcl.Build.

Removed relative path stuff. Still unsure about this.
Turned shadow copy back on.
Merge branch 'master' of https://sage.ad.isillc.com/tfs/isi/_git/ISIS.HigherGround into cogito_master

Conflicts:
	Cogito.Build/Cogito.Build.psd1
	Cogito.Build/build/Cogito.Build.props
	Cogito.Build/tools/Init.ps1
	Cogito/Cogito.Build/Cogito.Build.psd1
	Cogito/Cogito.Build/tools/Cogito.Build.psd1
Conflicts:
	Cogito.Build.Tests/Cogito.Build.Tests.csproj
	Cogito.Build.Tests/Cogito.Build.Tests.nuspec
	Cogito.Build.Tests/Fakes/Cogito.Build.fakes
	Cogito.Build.Tests/Fakes/Microsoft.Build.Framework.fakes
	Cogito.Build.Tests/FakesAssemblies/.gitignore
	Cogito.Build.Tests/FakesAssemblies/Cogito.Build.Fakes.fakesconfig
	Cogito.Build.Tests/FakesAssemblies/Cogito.Build.Fakes.xml
	Cogito.Build.Tests/FakesAssemblies/Microsoft.Build.Framework.4.0.0.0.Fakes.fakesconfig
	Cogito.Build.Tests/FakesAssemblies/Microsoft.Build.Framework.4.0.0.0.Fakes.xml
	Cogito.Build.Tests/GenerateAssemblyVersionTaskTests.cs
	Cogito.Build.Tests/InstallBuildPropsTaskTests.cs
	Cogito.Build.Tests/MakeRelativePathsTaskTests.cs
	Cogito.Build.Tests/Properties/AssemblyInfo.cs
	Cogito.Build.Tests/Test.csproj