Dump error if dotest itself fails and no tests were run.
Dump error if dotest itself fails and no tests were run.

Reviewers: zturner, clayborg

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D10163

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@238771 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb