Added gdb-remote tests around $qSupported.
Added gdb-remote tests around $qSupported.

Right now it just checks that qSupported returns at least
one recognized gdb stub feature.


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@210573 91177308-0d34-0410-b5e6-96231b3b80d8

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