Merge of first part of changes from the apricot branch, especially

the features that are needed to run the game. Compile tested with
scons, make, but not cmake, that seems to have an issue not related
to these changes. The changes include:

* GLSL support in the viewport and game engine, enable in the game
  menu in textured draw mode.
* Synced and merged part of the duplicated blender and gameengine/
  gameplayer drawing code.
* Further refactoring of game engine drawing code, especially mesh
  storage changed a lot.
* Optimizations in game engine armatures to avoid recomputations.
* A python function to get the framerate estimate in game.

* An option take object color into account in materials.
* An option to restrict shadow casters to a lamp's layers.
* Increase from 10 to 18 texture slots for materials, lamps, word.
  An extra texture slot shows up once the last slot is used.

* Memory limit for undo, not enabled by default yet because it
  needs the .B.blend to be changed.
* Multiple undo for image painting.

* An offset for dupligroups, so not all objects in a group have to
  be at the origin.

source/gameengine/Ketsji/KX_PythonInit.cpp

@@ -57,13 +57,13 @@
 #include "BL_ActionActuator.h"
 #include "RAS_IRasterizer.h"
 #include "RAS_ICanvas.h"
+#include "RAS_BucketManager.h"
 #include "MT_Vector3.h"
 #include "MT_Point3.h"
 #include "ListValue.h"
 #include "KX_Scene.h"
 #include "SND_DeviceManager.h"
 
-#include "RAS_OpenGLRasterizer/RAS_GLExtensionManager.h"
 #include "BL_Shader.h"
 
 #include "KX_PyMath.h"
@@ -83,6 +83,7 @@ extern "C" {
 #include "BKE_utildefines.h"
 #include "BKE_global.h"
 #include "BLI_blenlib.h"
+#include "GPU_material.h"
 
 static void setSandbox(TPythonSecurityLevel level);
 
@@ -90,6 +91,7 @@ static void setSandbox(TPythonSecurityLevel level);
 // 'local' copy of canvas ptr, for window height/width python scripts
 static RAS_ICanvas* gp_Canvas = NULL;
 static KX_Scene*	gp_KetsjiScene = NULL;
+static KX_KetsjiEngine*	gp_KetsjiEngine = NULL;
 static RAS_IRasterizer* gp_Rasterizer = NULL;
 
 void	KX_RasterizerDrawDebugLine(const MT_Vector3& from,const MT_Vector3& to,const MT_Vector3& color)
@@ -270,6 +272,11 @@ static PyObject* gPyGetPhysicsTicRate(PyObject*)
 	return PyFloat_FromDouble(PHY_GetActiveEnvironment()->getFixedTimeStep());
 }
 
+static PyObject* gPyGetAverageFrameRate(PyObject*)
+{
+	return PyFloat_FromDouble(KX_KetsjiEngine::GetAverageFrameRate());
+}
+
 static PyObject* gPyGetBlendFileList(PyObject*, PyObject* args)
 {
 	char cpath[sizeof(G.sce)];
@@ -409,6 +416,7 @@ static struct PyMethodDef game_methods[] = {
 	{"setLogicTicRate", (PyCFunction) gPySetLogicTicRate, METH_VARARGS, "Sets the logic tic rate"},
 	{"getPhysicsTicRate", (PyCFunction) gPyGetPhysicsTicRate, METH_NOARGS, "Gets the physics tic rate"},
 	{"setPhysicsTicRate", (PyCFunction) gPySetPhysicsTicRate, METH_VARARGS, "Sets the physics tic rate"},
+	{"getAverageFrameRate", (PyCFunction) gPyGetAverageFrameRate, METH_NOARGS, "Gets the estimated average frame rate"},
 	{"getBlendFileList", (PyCFunction)gPyGetBlendFileList, METH_VARARGS, "Gets a list of blend files in the same directory as the current blend file"},
 	{"PrintGLInfo", (PyCFunction)pyPrintExt, METH_NOARGS, "Prints GL Extension Info"},
 	{NULL, (PyCFunction) NULL, 0, NULL }
@@ -670,6 +678,76 @@ static PyObject* gPyDisableMotionBlur(PyObject*, PyObject* args)
 	Py_Return;
 }
 
+int getGLSLSettingFlag(char *setting)
+{
+	if(strcmp(setting, "lights") == 0)
+		return G_FILE_GLSL_NO_LIGHTS;
+	else if(strcmp(setting, "shaders") == 0)
+		return G_FILE_GLSL_NO_SHADERS;
+	else if(strcmp(setting, "shadows") == 0)
+		return G_FILE_GLSL_NO_SHADOWS;
+	else if(strcmp(setting, "ramps") == 0)
+		return G_FILE_GLSL_NO_RAMPS;
+	else if(strcmp(setting, "nodes") == 0)
+		return G_FILE_GLSL_NO_NODES;
+	else if(strcmp(setting, "extra_textures") == 0)
+		return G_FILE_GLSL_NO_EXTRA_TEX;
+	else
+		return -1;
+}
+
+static PyObject* gPySetGLSLMaterialSetting(PyObject*,
+											PyObject* args,
+											PyObject*)
+{
+	char *setting;
+	int enable, flag;
+
+	if (PyArg_ParseTuple(args,"si",&setting,&enable))
+	{
+		flag = getGLSLSettingFlag(setting);
+
+		if(flag != -1) {
+			if (enable)
+				G.fileflags &= ~flag;
+			else
+				G.fileflags |= flag;
+
+			/* display lists and GLSL materials need to be remade */
+			if(gp_KetsjiEngine) {
+				KX_SceneList *scenes = gp_KetsjiEngine->CurrentScenes();
+				KX_SceneList::iterator it;
+
+				for(it=scenes->begin(); it!=scenes->end(); it++)
+					if((*it)->GetBucketManager())
+						(*it)->GetBucketManager()->ReleaseDisplayLists();
+			}
+
+			GPU_materials_free();
+		}
+	}
+
+	Py_Return;
+}
+
+static PyObject* gPyGetGLSLMaterialSetting(PyObject*, 
+									 PyObject* args, 
+									 PyObject*)
+{
+	char *setting;
+	int enabled = 0, flag;
+
+	if (PyArg_ParseTuple(args,"s",&setting))
+	{
+		flag = getGLSLSettingFlag(setting);
+
+		if(flag != -1)
+			enabled = ((G.fileflags & flag) != 0);
+	}
+
+	return PyInt_FromLong(enabled);
+}
+
 STR_String	gPyGetWindowHeight__doc__="getWindowHeight doc";
 STR_String	gPyGetWindowWidth__doc__="getWindowWidth doc";
 STR_String	gPyEnableVisibility__doc__="enableVisibility doc";
@@ -703,11 +781,13 @@ static struct PyMethodDef rasterizer_methods[] = {
   {"getEyeSeparation", (PyCFunction) gPyGetEyeSeparation, METH_VARARGS, "get the eye separation for stereo mode"},
   {"setFocalLength", (PyCFunction) gPySetFocalLength, METH_VARARGS, "set the focal length for stereo mode"},
   {"getFocalLength", (PyCFunction) gPyGetFocalLength, METH_VARARGS, "get the focal length for stereo mode"},
+  {"setGLSLMaterialSetting",(PyCFunction) gPySetGLSLMaterialSetting,
+   METH_VARARGS, "set the state of a GLSL material setting"},
+  {"getGLSLMaterialSetting",(PyCFunction) gPyGetGLSLMaterialSetting,
+   METH_VARARGS, "get the state of a GLSL material setting"},
   { NULL, (PyCFunction) NULL, 0, NULL }
 };
 
-
-
 // Initialization function for the module (*must* be called initGameLogic)
 
 static char GameLogic_module_documentation[] =
@@ -720,11 +800,12 @@ static char Rasterizer_module_documentation[] =
 
 
 
-PyObject* initGameLogic(KX_Scene* scene) // quick hack to get gravity hook
+PyObject* initGameLogic(KX_KetsjiEngine *engine, KX_Scene* scene) // quick hack to get gravity hook
 {
 	PyObject* m;
 	PyObject* d;
 
+	gp_KetsjiEngine = engine;
 	gp_KetsjiScene = scene;
 
 	gUseVisibilityTemp=false;