[MSBuildTasks] Deal with spaces in args passed to NUnit
[MSBuildTasks] Deal with spaces in args passed to NUnit

- allow arguments passed to NUnit to contain spaces by surrounding
  with quotes
- check for correct application name depending on whether or not to
  force using 32-bit version

glasseyes/libpalaso,gmartin7/libpalaso,mccarthyrb/libpalaso,glasseyes/libpalaso,gtryus/libpalaso,glasseyes/libpalaso,andrew-polk/libpalaso,ermshiperete/libpalaso,glasseyes/libpalaso,ermshiperete/libpalaso,sillsdev/libpalaso,tombogle/libpalaso,gmartin7/libpalaso,ddaspit/libpalaso,ddaspit/libpalaso,gtryus/libpalaso,mccarthyrb/libpalaso,tombogle/libpalaso,gtryus/libpalaso,sillsdev/libpalaso,gtryus/libpalaso,ddaspit/libpalaso,mccarthyrb/libpalaso,andrew-polk/libpalaso,sillsdev/libpalaso,andrew-polk/libpalaso,gmartin7/libpalaso,tombogle/libpalaso,gmartin7/libpalaso,andrew-polk/libpalaso,tombogle/libpalaso,ermshiperete/libpalaso,sillsdev/libpalaso,ddaspit/libpalaso,mccarthyrb/libpalaso,ermshiperete/libpalaso