Fix deployment of IDE extension during installer build.

Author: someone-with-default-username

DevBuild2StageWithTests-4.cmd

@@ -1,6 +1,6 @@
 set MSBuild="%SystemRoot%\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
 set NoPause=true
-%MSBuild% NemerleAll.nproj /target:DevBuild2StageWithTests /p:Configuration=Debug /verbosity:n /tv:4.0 /p:TargetFrameworkVersion=v4.0
+%MSBuild% NemerleAll.nproj /target:DevBuild2StageWithTests /p:Configuration=Debug /p:NInstallIntegration=True /verbosity:n /tv:4.0 /p:TargetFrameworkVersion=v4.0
 rem /p:NTargetName=Build
 IF %errorlevel% == 0 call Reg-bins-2-4.0.cmd
 pause

DevBuildForCommit-4.cmd

@@ -1,5 +1,5 @@
 set MSBuild="%SystemRoot%\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
 set NoPause=true
-%MSBuild% NemerleAll.nproj /target:DevBuildFull /p:Configuration=Debug /verbosity:n  /tv:4.0 /p:TargetFrameworkVersion=v4.0
+%MSBuild% NemerleAll.nproj /target:DevBuildFull /p:Configuration=Debug /verbosity:n /p:NInstallIntegration=True /tv:4.0 /p:TargetFrameworkVersion=v4.0
 rem  /p:TargetName=ReBuild
 pause

DevBuildQuick-VS2010.cmd

@@ -1,6 +1,6 @@
 set MSBuild="%SystemRoot%\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
 set NoPause=true
-%MSBuild% NemerleAll.nproj /target:DevBuildQuick /p:Configuration=Debug /verbosity:n /p:NTargetName=Build  /tv:4.0 /p:TargetFrameworkVersion=v4.0
+%MSBuild% NemerleAll.nproj /target:DevBuildQuick /p:Configuration=Debug /verbosity:n /p:NTargetName=Build /p:NInstallIntegration=True /tv:4.0 /p:TargetFrameworkVersion=v4.0
 
 rem /verbosity:n /p:TargetName=Build
 IF %errorlevel% == 0 call Reg-bins-VS2010.cmd

DevBuildQuickWithTests-4.cmd

@@ -1,4 +1,4 @@
 set MSBuild="%SystemRoot%\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
-%MSBuild% NemerleAll.nproj /target:DevBuildQuickWithTests /p:Configuration=Debug /verbosity:n /p:NTargetName=Build /tv:4.0 /p:TargetFrameworkVersion=v4.0
+%MSBuild% NemerleAll.nproj /target:DevBuildQuickWithTests /p:Configuration=Debug /verbosity:n /p:NTargetName=Build /p:NInstallIntegration=True /tv:4.0 /p:TargetFrameworkVersion=v4.0
 rem /verbosity:n /p:TargetName=Build
 pause

NemerleAll.nproj

@@ -33,6 +33,7 @@
     <!--Path to boot compiler.-->
     <NBoot>$(NBin)\boot\</NBoot>
     <!-- Project Constants -->
+    <NInstallIntegration Condition=" '$(NInstallIntegration)' == '' ">False</NInstallIntegration>
   </PropertyGroup>
   <PropertyGroup Condition="'$(UseMSBuild)' != ''">
     <NProjectConstants Condition="'$(TargetFrameworkVersion)' == '' Or '$(TargetFrameworkVersion)' == 'v2.0' Or '$(TargetFrameworkVersion)' == 'v3.0' Or '$(TargetFrameworkVersion)' == 'v3.5'">RUNTIME_MS</NProjectConstants>
@@ -415,7 +416,7 @@
 
   <!--Helper target to build integration-->
   <Target Name="_Integration" DependsOnTargets="Linq;Unsafe;TestFramework;Tools" Condition="'$(UseMSBuild)' != ''">
-    <MSBuild Projects="@(NIntegrationProject)" Properties="OutputPath=$(NBin)\VsIntegration\; Nemerle=$(NCurBin); Configuration=$(Configuration); BaseIntermediateOutputPath=$(NObj)\VsIntegration\; IntermediateOutputPath=$(NObj)\VsIntegration\; NKeysDir=$(NBin)\keys" Targets="$(NTargetName)"  />
+    <MSBuild Projects="@(NIntegrationProject)" Properties="OutputPath=$(NBin)\VsIntegration\; Nemerle=$(NCurBin); Configuration=$(Configuration); BaseIntermediateOutputPath=$(NObj)\VsIntegration\; IntermediateOutputPath=$(NObj)\VsIntegration\; NKeysDir=$(NBin)\keys; DeployExtension=$(NInstallIntegration)" Targets="$(NTargetName)"  />
   </Target>
 
   <Target Name="TestFramework">