<rdar://problem/11597333>

Fixed an issue where LLDB would use armv7-apple-unknown even though armv7-unknown-unknown was specified with the target create command:

(lldb) target create -a armv7-unknown-unknown <executable>

llvm-svn: 158023

lldb/source/Target/TargetList.cpp

@@ -165,6 +165,10 @@ TargetList::CreateTarget
     if (!platform_sp)
         platform_sp = debugger.GetPlatformList().GetSelectedPlatform();
 
+    if (!arch.IsValid())
+        arch = specified_arch;
+    
+
     if (file)
     {
         ModuleSP exe_module_sp;