Bump version to 2.11.5 in build.number file.
Bump version to 2.11.5 in build.number file.

Scala 2.11.4 release has been staged, we should start publishing snapshots
for Scala 2.11.5 now.

shimib/scala,felixmulder/scala,martijnhoekstra/scala,felixmulder/scala,shimib/scala,jvican/scala,shimib/scala,slothspot/scala,jvican/scala,slothspot/scala,martijnhoekstra/scala,felixmulder/scala,lrytz/scala,jvican/scala,felixmulder/scala,scala/scala,martijnhoekstra/scala,slothspot/scala,lrytz/scala,shimib/scala,martijnhoekstra/scala,jvican/scala,lrytz/scala,jvican/scala,jvican/scala,slothspot/scala,slothspot/scala,martijnhoekstra/scala,scala/scala,felixmulder/scala,felixmulder/scala,martijnhoekstra/scala,slothspot/scala,shimib/scala,scala/scala,lrytz/scala,lrytz/scala,slothspot/scala,jvican/scala,felixmulder/scala,shimib/scala,lrytz/scala,scala/scala,scala/scala,scala/scala