Rename Error -> Status.

This renames the LLDB error class to Status, as discussed
on the lldb-dev mailing list.

A change of this magnitude cannot easily be done without
find and replace, but that has potential to catch unwanted
occurrences of common strings such as "Error".  Every effort
was made to find all the obvious things such as the word "Error"
appearing in a string, etc, but it's possible there are still
some lingering occurences left around.  Hopefully nothing too
serious.

llvm-svn: 302872
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
index 6c923ce..4e20be7 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
@@ -756,7 +756,7 @@
   return false;
 }
 
-lldb_private::Error ClangExpressionParser::PrepareForExecution(
+lldb_private::Status ClangExpressionParser::PrepareForExecution(
     lldb::addr_t &func_addr, lldb::addr_t &func_end,
     lldb::IRExecutionUnitSP &execution_unit_sp, ExecutionContext &exe_ctx,
     bool &can_interpret, ExecutionPolicy execution_policy) {
@@ -764,7 +764,7 @@
   func_end = LLDB_INVALID_ADDRESS;
   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
 
-  lldb_private::Error err;
+  lldb_private::Status err;
 
   std::unique_ptr<llvm::Module> llvm_module_ap(
       m_code_generator->ReleaseModule());
@@ -857,7 +857,7 @@
 
     if (execution_policy != eExecutionPolicyAlways &&
         execution_policy != eExecutionPolicyTopLevel) {
-      lldb_private::Error interpret_error;
+      lldb_private::Status interpret_error;
 
       bool interpret_function_calls =
           !process ? false : process->CanInterpretFunctionCalls();
@@ -941,9 +941,9 @@
   return err;
 }
 
-lldb_private::Error ClangExpressionParser::RunStaticInitializers(
+lldb_private::Status ClangExpressionParser::RunStaticInitializers(
     lldb::IRExecutionUnitSP &execution_unit_sp, ExecutionContext &exe_ctx) {
-  lldb_private::Error err;
+  lldb_private::Status err;
 
   lldbassert(execution_unit_sp.get());
   lldbassert(exe_ctx.HasThreadScope());