minor refactoring to remove unneeded/unspecific header files

[clayborg]

Looks fine.

source/Core/Log.cpp

 //===-- Log.cpp -------------------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
-#include "lldb/lldb-python.h"
-
 // C Includes
 #include <stdio.h>
 #include <stdarg.h>
 #include <stdlib.h>
 
 // C++ Includes
 #include <map>
 #include <string>
 
 // Other libraries and framework includes
 // Project includes
-#include "lldb/Core/Debugger.h"
 #include "lldb/Core/Log.h"
 #include "lldb/Core/PluginManager.h"
 #include "lldb/Core/StreamFile.h"
 #include "lldb/Core/StreamString.h"
 #include "lldb/Host/Host.h"
 #include "lldb/Host/Mutex.h"
 #include "lldb/Host/ThisThread.h"
 #include "lldb/Host/TimeValue.h"
Log::LogIf (uint32_t bits, const char *format, ...)
     {
         va_list args;
         va_start (args, format);
         PrintfWithFlagsVarArg (0, format, args);
         va_end (args);
     }
 }
 
-
 //----------------------------------------------------------------------
 // Printing of errors that are not fatal.
 //----------------------------------------------------------------------
 void
 Log::Error (const char *format, ...)
 {
     char *arg_msg = NULL;
     va_list args;

source/Host/common/Host.cpp

 //===-- Host.cpp ------------------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
-#include "lldb/lldb-python.h"
-
 // C includes
 #include <errno.h>
 #include <limits.h>
 #include <stdlib.h>
 #include <sys/types.h>
 #ifndef _WIN32
 #include <unistd.h>
 #include <dlfcn.h>

 
 // C++ includes
 #include <limits>
 
 #include "lldb/Host/FileSystem.h"
 #include "lldb/Host/Host.h"
 #include "lldb/Host/HostInfo.h"
 #include "lldb/Core/ArchSpec.h"
-#include "lldb/Core/Debugger.h"
 #include "lldb/Core/Error.h"
 #include "lldb/Core/Log.h"
-#include "lldb/Core/Module.h"
 #include "lldb/Host/FileSpec.h"
 #include "lldb/Host/HostProcess.h"
 #include "lldb/Host/MonitoringProcessLauncher.h"
+#include "lldb/Host/Predicate.h"
 #include "lldb/Host/ProcessLauncher.h"
 #include "lldb/Host/ThreadLauncher.h"
 #include "lldb/lldb-private-forward.h"
+#include "llvm/Support/FileSystem.h"
 #include "lldb/Target/FileAction.h"
 #include "lldb/Target/ProcessLaunchInfo.h"
-#include "lldb/Target/TargetList.h"
+#include "lldb/Target/UnixSignals.h"
 #include "lldb/Utility/CleanUp.h"
+#include "llvm/ADT/SmallString.h"
 
 #if defined(_WIN32)
 #include "lldb/Host/windows/ProcessLauncherWindows.h"
 #else
 #include "lldb/Host/posix/ProcessLauncherPosix.h"
 #endif
 
 #if defined (__APPLE__)