Add support for the new (added last week) llvm::Triple::WatchOS and ::TvOS
in places where we check for Triple::IOS.  They're mostly the same as far
as lldb is conerned.
.
Also add a base cass implementation for Process::IsAlive - Greg added this 
last year but it didn't get upstreamed.

llvm-svn: 252227
diff --git a/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp b/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
index b668437..69d8ec1 100644
--- a/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
+++ b/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
@@ -157,6 +157,8 @@
             case llvm::Triple::Darwin:  // Should use "macosx" for desktop and "ios" for iOS, but accept darwin just in case
             case llvm::Triple::MacOSX:  // For desktop targets
             case llvm::Triple::IOS:     // For arm targets
+            case llvm::Triple::TvOS:
+            case llvm::Triple::WatchOS:
                 if (triple_ref.getVendor() == llvm::Triple::Apple)
                 {
                     ObjectFile *exe_objfile = exe_module->GetObjectFile();
@@ -698,7 +700,7 @@
 bool
 ProcessKDP::IsAlive ()
 {
-    return m_comm.IsConnected() && m_private_state.GetValue() != eStateExited;
+    return m_comm.IsConnected() && Process::IsAlive();
 }
 
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