[lldb] Fix relative imports and set the appropriate include dirs

[JDevlieghere]

Summary

After moving python.swig and lua.swig into their respective
subdirectories, the relative paths in these files were out of date. This
fixes that and ensures the appropriate include paths are set in the SWIG
invocation.

[aprantl]

Looks plausible!

lldb/bindings/lua/CMakeLists.txt

 add_custom_command(
   OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/LLDBWrapLua.cpp
   DEPENDS ${SWIG_SOURCES}
   DEPENDS ${SWIG_INTERFACES}
   DEPENDS ${SWIG_HEADERS}
   COMMAND ${SWIG_EXECUTABLE}
       ${SWIG_COMMON_FLAGS}
+      -I${CMAKE_CURRENT_SOURCE_DIR}
       -lua
       -w503
       -outdir ${CMAKE_CURRENT_BINARY_DIR}
       -o ${CMAKE_CURRENT_BINARY_DIR}/LLDBWrapLua.cpp
       ${CMAKE_CURRENT_SOURCE_DIR}/lua.swig
   VERBATIM
   COMMENT "Building LLDB Lua wrapper")
 
 add_custom_target(swig_wrapper_lua ALL DEPENDS
   ${CMAKE_CURRENT_BINARY_DIR}/LLDBWrapLua.cpp
 )

lldb/bindings/lua/lua.swig

 /*
    lldb.swig
 
    This is the input file for SWIG, to create the appropriate C++ wrappers and
    functions for various scripting languages, to enable them to call the
    liblldb Script Bridge functions.
 */
 
 %module lldb
 
 %include <std_string.i>
-%include "./lua/lua-typemaps.swig"
-%include "./macros.swig"
-%include "./headers.swig"
+%include "lua-typemaps.swig"
+%include "macros.swig"
+%include "headers.swig"
 
 %{
 using namespace lldb_private;
 using namespace lldb;
 %}
 
-%include "./interfaces.swig"
+%include "interfaces.swig"

lldb/bindings/python/CMakeLists.txt

 add_custom_command(
   OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/LLDBWrapPython.cpp
   OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/lldb.py
   DEPENDS ${SWIG_SOURCES}
   DEPENDS ${SWIG_INTERFACES}
   DEPENDS ${SWIG_HEADERS}
   COMMAND ${SWIG_EXECUTABLE}
       ${SWIG_COMMON_FLAGS}
+      -I${CMAKE_CURRENT_SOURCE_DIR}
       -c++
       -shadow
       -python
       -threads
       -outdir ${CMAKE_CURRENT_BINARY_DIR}
       -o ${CMAKE_CURRENT_BINARY_DIR}/LLDBWrapPython.cpp
       ${CMAKE_CURRENT_SOURCE_DIR}/python.swig
   VERBATIM

lldb/bindings/python/python.swig

def lldb_iter(obj, getsize, getelem):
     """A generator adaptor to support iteration for lldb container objects."""
     size = getattr(obj, getsize)
     elem = getattr(obj, getelem)
     for i in range(size()):
         yield elem(i)
 %}
 
 %include <std_string.i>
-%include "./python/python-typemaps.swig"
-%include "./macros.swig"
-%include "./headers.swig"
+%include "python-typemaps.swig"
+%include "macros.swig"
+%include "headers.swig"
 
 %{
 #include "../source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h"
 #include "../bindings/python/python-swigsafecast.swig"
 using namespace lldb_private;
 using namespace lldb_private::python;
 using namespace lldb;
 %}
 
-%include "./interfaces.swig"
-%include "./python/python-extensions.swig"
-%include "./python/python-wrapper.swig"
+%include "interfaces.swig"
+%include "python-extensions.swig"
+%include "python-wrapper.swig"
 
 %pythoncode%{
 _initialize = True
 try:
    import lldbconfig
    _initialize = lldbconfig.INITIALIZE
 except ImportError:
    pass