Upstreaming the BridgeOS device support and the

LC_BUILD_VERSION load command handling - this
commit is a combination of patches by Adrian
Prantl and myself.  llvm::Triple::BridgeOS 
isn't defined yet, so all references to that
are currently commented out.  

Also update Xcode project file to build the 
NativePDB etc plugins.

<rdar://problem/43353615> 

llvm-svn: 344209

lldb/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp

@@ -147,6 +147,7 @@ DynamicLoader *DynamicLoaderDarwinKernel::CreateInstance(Process *process,
     case llvm::Triple::IOS:
     case llvm::Triple::TvOS:
     case llvm::Triple::WatchOS:
+    // NEED_BRIDGEOS_TRIPLE case llvm::Triple::BridgeOS:
       if (triple_ref.getVendor() != llvm::Triple::Apple) {
         return NULL;
       }