#361, restored classpath settings to include multiple source directories.
#361, restored classpath settings to include multiple source
directories.

The original path settings were overwritten by M2Eclipse. M2E > 1.0 is
broken in that it doesn't transfer multiple source paths configured via
maven-build-helper back to the eclipse project. The m2extras plugin is
supposed to fix this issue but it wouldn't install in my Helios
installation. Using M2E < 1.0 resolves the issue. This is among the
reasons why the STS people haven't upgraded their embedded M2E yet.
powertac/powertac-server,powertac/powertac-server,powertac/powertac-server,powertac/powertac-server