The pipe2(2) call is supported on NetBSD
The pipe2(2) call is supported on NetBSD

Patch by Kamil Rytarowski.

Differential Revision:	http://reviews.llvm.org/D12746


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@247568 91177308-0d34-0410-b5e6-96231b3b80d8

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