[build] $(JavaInteropProfile) now outputs to $(Configuration)Net45 folder

This allows us to have two sets of outputs:
- bin/Debug/Java.Interop.dll - referenced by MSBuild tasks
- bin/DebugNet45/Java.Interop.dll - referenced by Mono.Android.dll and apps

Other changes:
- Fixed warning where file was getting imported twice
- Updated `.gitignore` for `*.binlog` files

Author: jonathanpeppers

.gitignore

@@ -11,4 +11,5 @@ packages
 .nuget/
 *.userprefs
 *.user
-Resource.designer.cs
+Resource.designer.cs
+*.binlog

src/Java.Interop/Java.Interop.Net45.props

@@ -1,8 +1,9 @@
 <Project>
-  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
-    <NoStdLib>true</NoStdLib>
+    <NoStdLib Condition=" '$(XAInstallPrefix)' != '' ">true</NoStdLib>
+    <OutputPath>..\..\bin\$(Configuration)Net45</OutputPath>
   </PropertyGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup Condition=" '$(XAInstallPrefix)' != '' ">
     <Reference Include="mscorlib">
       <HintPath>$(XAInstallPrefix)xbuild-frameworks\MonoAndroid\v1.0\mscorlib.dll</HintPath>
@@ -17,4 +18,9 @@
       <Private>False</Private>
     </Reference>
   </ItemGroup>
+  <ItemGroup Condition=" '$(XAInstallPrefix)' == '' ">
+    <Reference Include="mscorlib" />
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+  </ItemGroup>
 </Project>

src/Java.Interop/Java.Interop.csproj

@@ -129,7 +129,6 @@
     <CompileJavaInteropJar Include="java\com\xamarin\java_interop\ManagedPeer.java" />
   </ItemGroup>
   <Import Project="..\..\Configuration.props" />
-  <Import Project="$(JNIEnvGenPath)\JdkInfo.props" />
   <Import Project="Java.Interop.PCL.props"   Condition=" '$(JavaInteropProfile)' != 'net45' " />
   <Import Project="Java.Interop.Net45.props" Condition=" '$(JavaInteropProfile)' == 'net45' " />
   <Import Project="Java.Interop.targets" />