Decodable rename protection with odd crproj outputs in strange directory.

[JasonUnger]

Describe the bug
When using relative directories for baseDir and OutputDir, odd things happen with how files are written.

To Reproduce
Steps to reproduce the behavior:

1. Have a configuration similar to:

<project outputDir=".\Licensing" baseDir=".." xmlns="http://confuser.codeplex.com">
  <rule pattern="true" preset="maximum">
    <protection id="rename">
      <argument name="mode" value="decodable" />
    </protection>
  </rule>
  <module path="Demo\DemoWinFormApp\bin\Release\Licensing.GUI.dll" snKey="Core\Licensing.GUI\Licensing.GUI.snk" />
  <module path="Demo\DemoWinFormApp\bin\Release\Licensing.dll" snKey="Core\Licensing\Licensing.snk" />
  <module path="Demo\DemoWinFormApp\bin\Release\DemoLicense.dll" />
  <module path="Demo\DemoWinFormApp\bin\Release\DemoWinFormApp.exe" />
</project>

2. Run obfuscation using above file. (Config file is at $(SolutionDir)\ConfuserEx\DemoApp.crproj)
3. Find symbols.map at $(SolutionDir)$(SolutionDirName)

Expected behavior
Expect to find symbols.map either next to crproj file or next to module.