send compiler errors to TeamCity

This will add the compiler errors to teamcity's list of errors so you dont have to browse the build log to find them.
I have only tried this with TeamCity 8 EAP.
![teamcity_error](https://f.cloud.github.com/assets/185207/509514/454572c4-bda6-11e2-9057-647dea4707e7.png)