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/CommandObjectMemory.cpp b/source/Commands/CommandObjectMemory.cpp
index f63848c..c731c61 100644
--- a/source/Commands/CommandObjectMemory.cpp
+++ b/source/Commands/CommandObjectMemory.cpp
@@ -36,8 +36,8 @@
     class CommandOptions : public Options
     {
     public:
-        CommandOptions () :
-            Options()
+        CommandOptions (CommandInterpreter &interpreter) :
+            Options(interpreter)
         {
             ResetOptionValues();
         }
@@ -198,7 +198,8 @@
                        "memory read",
                        "Read from the memory of the process being debugged.",
                        NULL,
-                       eFlagProcessMustBeLaunched)
+                       eFlagProcessMustBeLaunched),
+        m_options (interpreter)
     {
         CommandArgumentEntry arg1;
         CommandArgumentEntry arg2;
@@ -434,8 +435,8 @@
     class CommandOptions : public Options
     {
     public:
-        CommandOptions () :
-            Options()
+        CommandOptions (CommandInterpreter &interpreter) :
+            Options(interpreter)
         {
             ResetOptionValues();
         }
@@ -521,7 +522,8 @@
                        "Write to the memory of the process being debugged.",
                        //"memory write [<cmd-options>] <addr> [value1 value2 ...]",
                        NULL,
-                       eFlagProcessMustBeLaunched)
+                       eFlagProcessMustBeLaunched),
+        m_options (interpreter)
     {
         CommandArgumentEntry arg1;
         CommandArgumentEntry arg2;