Point Unity logging to a file near us, and dump it out as a part of the build.

Author: rpavlik

build-unity-packages.cmd

@@ -3,7 +3,8 @@ cd /d %~dp0
 rem Check to make sure we've actually copied over at least something that could be the OSVR and Managed-OSVR binaries.
 if not exist OSVR-Unity\Assets\Plugins\x86\*.dll exit /B 1
 
-"C:\Program Files (x86)\Unity\Editor\Unity.exe" -quit -batchmode -projectPath "%~dp0OSVR-Unity" -executeMethod OSVRUnityBuild.build
+"C:\Program Files (x86)\Unity\Editor\Unity.exe" -quit -batchmode -projectPath "%~dp0OSVR-Unity" -logFile "%~dp0unity.log" -executeMethod OSVRUnityBuild.build
+type "%~dp0unity.log"
 
 rem Fail the build if we didn't get a unitypackage out.
 if not exist OSVR-Unity\*.unitypackage exit /B 1