Bump to Java.Interop/master/5eeb287b (dotnet#546)

Commits prior to Java.Interop/5eeb287b had a bug in
`Xamarin.Android.Cecil.csproj` which would cause it to constantly
generate new assemblies whenever it was built.

The result being that:

	xbuild src/Xamarin.Android.Build.Tasks/Xamarin.Android.Build.Tasks.csproj

would *always* take a lengthy amount of time -- ~36 seconds -- even
when "nothing has changed." In fact, something *had* changed:
`Xamarin.Android.Cecil.dll` had changed, necessitating that
*every project that references it* also be rebuilt, in a cascading
manner:

	  Target CoreCompile needs to be built as input file '.../xamarin-android/external/Java.Interop/bin/Debug//Xamarin.Android.Cecil.dll' is newer than output file 'obj/Debug/Xamarin.Android.Tools.Aidl.dll'
	  Target CoreCompile needs to be built as input file '.../xamarin-android/external/Java.Interop/bin/Debug//Xamarin.Android.Cecil.dll' is newer than output file 'obj/Debug/Java.Interop.Tools.Diagnostics.dll'
	  Target CoreCompile needs to be built as input file '.../xamarin-android/external/Java.Interop/bin/Debug//Java.Interop.Tools.Diagnostics.dll' is newer than output file 'obj/Debug/Java.Interop.Tools.Cecil.dll'
	  Target CoreCompile needs to be built as input file '.../xamarin-android/external/Java.Interop/bin/Debug//Java.Interop.Tools.Cecil.dll' is newer than output file 'obj/Debug/Java.Interop.Tools.JavaCallableWrappers.dll'
	   Target CoreCompile needs to be built as input file '.../xamarin-android/external/Java.Interop/bin/Debug//Xamarin.Android.Cecil.dll' is newer than output file 'obj/Debug/generator.exe'
	   Target CoreCompile needs to be built as input file '.../xamarin-android/external/Java.Interop/bin/Debug//Xamarin.Android.Cecil.dll' is newer than output file 'obj/Debug/jcw-gen.exe'
	    Target CoreCompile needs to be built as input file '.../xamarin-android/external/Java.Interop/bin/Debug//Xamarin.Android.Cecil.dll' is newer than output file 'obj/Debug/remap-assembly-ref.exe'
	  Target _BuildJNIEnv needs to be built as input file '../../bin/BuildDebug/jnienv-gen.exe' is newer than output file 'Android.Runtime/JNIEnv.g.cs'
	  Target _GenerateMonoAndroidDex18 needs to be built as input file '../../bin/Debug/lib/xbuild-frameworks/MonoAndroid/v7.1/mono.android.jar' is newer than output file '../../bin/Debug/lib/xbuild-frameworks/MonoAndroid/v7.1/mono.android.dex'
	Target CoreCompile needs to be built as input file 'obj/Debug/Profile.g.cs' is newer than output file 'obj/Debug/Xamarin.Android.Build.Tasks.dll'

This is maddening, and serves no purpose.

Java.Interop/5eeb287b fixed `Xamarin.Android.Cecil.csproj` so that it
wouldn't constantly regenerate the output assembly, which should help
improve the cascading rebuild situation.

Author: jonpryor