Fix Windows build?

By convention (and often enforced requirement), `$(OutputPath)` ends
with `\`, which means that quoting it for use with `<Exec/>`:

    <Exec Command="whatever &quot;$(OutputPath)&quot;" />

will often result in an *invalid* command, because the `\` escapes the quote!

    whatever "C:\path\to\output\" # ruh roh!

The fix is to instead use `$(OutputPath.OutputPath.TrimEnd('\')`,
which ensures that the path does *not* end in `\`, preventing
the unintentional escape usage:

    whatever "C:\path\to\output" # yay!

Author: jonpryor

src/native/native-mono.csproj

@@ -11,7 +11,7 @@
   <Import Project="..\..\Configuration.props" />
 
   <PropertyGroup>
-    <OutputPath>$(NativeRuntimeOutputRootDir)mono</OutputPath>
+    <OutputPath>$(NativeRuntimeOutputRootDir)mono\</OutputPath>
     <CMakeRuntimeFlavor>MonoVM</CMakeRuntimeFlavor>
   </PropertyGroup>
 

src/native/native.targets

@@ -90,7 +90,7 @@
     <ItemGroup>
       <_ConfigureArchiveDSOStubCommands Include="@(AndroidSupportedTargetJitAbi)">
         <Command>$(CmakePath)</Command>
-        <Arguments>-DOUTPUT_PATH="$(OutputPath)" -DRUNTIME_FLAVOR="$(CMakeRuntimeFlavor)" --preset default-release-%(AndroidSupportedTargetJitAbi.Identity) -DBUILD_ARCHIVE_DSO_STUB=ON -DSTRIP_DEBUG=ON "$(MSBuildThisFileDirectory)"</Arguments>
+        <Arguments>-DOUTPUT_PATH="$(OutputPath.TrimEnd('\')" -DRUNTIME_FLAVOR="$(CMakeRuntimeFlavor)" --preset default-release-%(AndroidSupportedTargetJitAbi.Identity) -DBUILD_ARCHIVE_DSO_STUB=ON -DSTRIP_DEBUG=ON "$(MSBuildThisFileDirectory)"</Arguments>
         <WorkingDirectory>$(FlavorIntermediateOutputPath)%(AndroidSupportedTargetJitAbi.AndroidRID)-archive-dso-stub</WorkingDirectory>
       </_ConfigureArchiveDSOStubCommands>
     </ItemGroup>
@@ -113,7 +113,7 @@
       <_NoInline Condition=" '$(DoNotInlineMonodroid)' == 'true' ">-DDONT_INLINE=ON</_NoInline>
       <_NoStrip Condition=" '$(DoNotStripMonodroid)' == 'true' ">-DSTRIP_DEBUG=OFF</_NoStrip>
 
-      <_CmakeAndroidFlags>-DOUTPUT_PATH="$(OutputPath)" -DRUNTIME_FLAVOR="$(CMakeRuntimeFlavor)" $(_NoInline) $(_NoStrip) "$(MSBuildThisFileDirectory)"</_CmakeAndroidFlags>
+      <_CmakeAndroidFlags>-DOUTPUT_PATH="$(OutputPath.TrimEnd('\')" -DRUNTIME_FLAVOR="$(CMakeRuntimeFlavor)" $(_NoInline) $(_NoStrip) "$(MSBuildThisFileDirectory)"</_CmakeAndroidFlags>
     </PropertyGroup>
 
     <ItemGroup>