Modified the ArchSpec to take an optional "Platform *" when setting the triple.
This allows you to have a platform selected, then specify a triple using
"i386" and have the remaining triple items (vendor, os, and environment) set
automatically.

Many interpreter commands take the "--arch" option to specify an architecture
triple, so now the command options needed to be able to get to the current
platform, so the Options class now take a reference to the interpreter on
construction.

Modified the build LLVM building in the Xcode project to use the new
Xcode project level user definitions:

LLVM_BUILD_DIR - a path to the llvm build directory
LLVM_SOURCE_DIR - a path to the llvm sources for the llvm that will be used to build lldb
LLVM_CONFIGURATION - the configuration that lldb is built for (Release, 
Release+Asserts, Debug, Debug+Asserts).

I also changed the LLVM build to not check if "lldb/llvm" is a symlink and
then assume it is a real llvm build directory versus the unzipped llvm.zip
package, so now you can actually have a "lldb/llvm" directory in your lldb
sources.




git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@129112 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Commands/CommandObjectFrame.cpp b/source/Commands/CommandObjectFrame.cpp
index 8c83b67..3b697fd 100644
--- a/source/Commands/CommandObjectFrame.cpp
+++ b/source/Commands/CommandObjectFrame.cpp
@@ -99,8 +99,8 @@
     {
     public:
 
-        CommandOptions () :
-            Options()
+        CommandOptions (CommandInterpreter &interpreter) :
+            Options(m_interpreter)
         {
             ResetOptionValues ();
         }
@@ -155,7 +155,8 @@
                        "frame select",
                        "Select a frame by index from within the current thread and make it the current frame.",
                        NULL,
-                       eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
+                       eFlagProcessMustBeLaunched | eFlagProcessMustBePaused),
+        m_options (interpreter)
     {
         CommandArgumentEntry arg;
         CommandArgumentData index_arg;
@@ -224,7 +225,7 @@
                 else
                 {
                     result.AppendError ("invalid arguments.\n");
-                    m_options.GenerateOptionUsage (m_interpreter, result.GetErrorStream(), this);
+                    m_options.GenerateOptionUsage (result.GetErrorStream(), this);
                 }
             }
                 
@@ -289,8 +290,8 @@
     {
     public:
 
-        CommandOptions () :
-            Options()
+        CommandOptions (CommandInterpreter &interpreter) :
+            Options(m_interpreter)
         {
             ResetOptionValues ();
         }
@@ -407,7 +408,8 @@
                        "Children of aggregate variables can be specified such as "
                        "'var->child.x'.",
                        NULL,
-                       eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
+                       eFlagProcessMustBeLaunched | eFlagProcessMustBePaused),
+        m_options (interpreter)
     {
         CommandArgumentEntry arg;
         CommandArgumentData var_name_arg;