Make it easier to hook into the outer/inner Build/Clean/Publish process.

Closes #69.

Author: alexrp

src/sdk/build/Vezel.Zig.Sdk.Build.targets

@@ -1,26 +1,27 @@
 <Project>
     <PropertyGroup>
-        <_InnerOrOuterBuild>_InnerBuild</_InnerOrOuterBuild>
-        <_InnerOrOuterBuild Condition="'$(IsOuterBuild)' == 'true'">_OuterBuild</_InnerOrOuterBuild>
+        <_InnerOrOuterBuild>InnerBuild</_InnerOrOuterBuild>
+        <_InnerOrOuterBuild Condition="'$(IsOuterBuild)' == 'true'">OuterBuild</_InnerOrOuterBuild>
     </PropertyGroup>
 
     <Target Name="Build"
             DependsOnTargets="$(_InnerOrOuterBuild)"
             Condition="'$(_InvalidConfigurationWarning)' != 'true'" />
 
-    <Target Name="_OuterBuild">
+    <Target Name="OuterBuild"
+            DependsOnTargets="$(OuterBuildDependsOn)">
         <ItemGroup>
             <_RuntimeIdentifiers Include="$(RuntimeIdentifiers)" />
             <_InnerProjects Include="$(MSBuildProjectFullPath)"
                             Properties="RuntimeIdentifier=%(_RuntimeIdentifiers.Identity)" />
         </ItemGroup>
 
         <MSBuild Projects="@(_InnerProjects)"
-                 Targets="_InnerBuild"
+                 Targets="InnerBuild"
                  BuildInParallel="$(BuildInParallel)" />
     </Target>
 
-    <Target Name="_InnerBuild"
+    <Target Name="InnerBuild"
             DependsOnTargets="$(BuildDependsOn)"
             Returns="@(TargetPathWithTargetPlatformMoniker)" />
 

src/sdk/build/Vezel.Zig.Sdk.Clean.targets

@@ -5,26 +5,27 @@
     </ItemGroup>
 
     <PropertyGroup>
-        <_InnerOrOuterClean>_InnerClean</_InnerOrOuterClean>
-        <_InnerOrOuterClean Condition="'$(IsOuterBuild)' == 'true'">_OuterClean</_InnerOrOuterClean>
+        <_InnerOrOuterClean>InnerClean</_InnerOrOuterClean>
+        <_InnerOrOuterClean Condition="'$(IsOuterBuild)' == 'true'">OuterClean</_InnerOrOuterClean>
     </PropertyGroup>
 
     <Target Name="Clean"
             DependsOnTargets="$(_InnerOrOuterClean)"
             Condition="'$(_InvalidConfigurationWarning)' != 'true'" />
 
-    <Target Name="_OuterClean">
+    <Target Name="OuterClean"
+            DependsOnTargets="$(OuterCleanDependsOn)">
         <ItemGroup>
             <_RuntimeIdentifiers Include="$(RuntimeIdentifiers)" />
             <_InnerProjects Include="$(MSBuildProjectFullPath)"
                             Properties="RuntimeIdentifier=%(_RuntimeIdentifiers.Identity)" />
         </ItemGroup>
 
         <MSBuild Projects="@(_InnerProjects)"
-                 Targets="_InnerClean"
+                 Targets="InnerClean"
                  BuildInParallel="$(BuildInParallel)" />
     </Target>
 
-    <Target Name="_InnerClean"
+    <Target Name="InnerClean"
             DependsOnTargets="$(CleanDependsOn)" />
 </Project>

src/sdk/build/Vezel.Zig.Sdk.Publish.targets

@@ -1,22 +1,23 @@
 <Project>
     <PropertyGroup>
-        <_InnerOrOuterPublish>_InnerPublish</_InnerOrOuterPublish>
-        <_InnerOrOuterPublish Condition="'$(IsOuterBuild)' == 'true'">_OuterPublish</_InnerOrOuterPublish>
+        <_InnerOrOuterPublish>InnerPublish</_InnerOrOuterPublish>
+        <_InnerOrOuterPublish Condition="'$(IsOuterBuild)' == 'true'">OuterPublish</_InnerOrOuterPublish>
     </PropertyGroup>
 
     <Target Name="Publish"
             DependsOnTargets="$(_InnerOrOuterPublish)"
             Condition="'$(_InvalidConfigurationWarning)' != 'true'" />
 
-    <Target Name="_OuterPublish">
+    <Target Name="OuterPublish"
+            DependsOnTargets="$(OuterPublishDependsOn)">
         <ItemGroup>
             <_RuntimeIdentifiers Include="$(RuntimeIdentifiers)" />
             <_InnerProjects Include="$(MSBuildProjectFullPath)"
                             Properties="RuntimeIdentifier=%(_RuntimeIdentifiers.Identity)" />
         </ItemGroup>
 
         <MSBuild Projects="@(_InnerProjects)"
-                 Targets="_InnerPublish"
+                 Targets="InnerPublish"
                  BuildInParallel="$(BuildInParallel)" />
     </Target>
 
@@ -25,7 +26,7 @@
     well as the build and clean logic in MSBuild, so we have to duplicate some
     of the logic in the default Publish target here.
     -->
-    <Target Name="_InnerPublish"
+    <Target Name="InnerPublish"
             DependsOnTargets="_PublishBuildAlternative; _PublishNoBuildAlternative"
             Condition="'$(IsPublishable)' == 'true'">
         <Message Text="$(MSBuildProjectName) -> $([System.IO.Path]::GetFullPath('$(PublishDir)'))"