Interface:

- added submenu "Scripts" in both View3D->Object and Mesh menus.
  Put them on top (it's better to follow some guideline, so users don't have to search for "Scripts" submenu in a different position in each menu), feel free to change.
- added button 'previous win' to SpaceScript, makes accessing buttons win, for example, much faster.  Maybe all spaces could have this button.

BPython:
- added Window.EditMode(), to check, enter and leave edit mode.  Scripts that change mesh data need this to leave edit mode before making changes to the active (G.obedit) mesh, of course.
- updated script bevel_center to use the above function and also popup an error msg if the active obj is not a mesh.
- doc updates, minor fixes.

Forgot to mention in my previous commit that I also updated the "-P" command-line option (for running script files) to be able to run already loaded Blender Texts, too.  So, if you have a script called 'Text' in foo.blend, you can run it with blender foo.blend -P Text .

source/blender/python/BPY_interface.c

@@ -42,7 +42,6 @@
 #include <MEM_guardedalloc.h>
 #include <BLI_blenlib.h> /* for BLI_last_slash() */
 
-#include <BDR_editobject.h> /* for exit_editmode() */
 #include <BIF_interface.h> /* for pupmenu() */
 #include <BIF_space.h>
 #include <BIF_screen.h>
@@ -448,10 +447,6 @@ int BPY_txt_do_python_Text(struct Text* text)
 	 * will have been deallocated already, so we need to copy its name here. */
 	BLI_strncpy(textname, GetName(text), strlen(GetName(text))+1);
 
-	/* if in it, leave editmode, since changes a script makes to meshdata
-	 * can be lost otherwise. */
-	if (G.obedit) exit_editmode(1);
-
 	script->id.us = 1;
 	script->flags = SCRIPT_RUNNING;
 	script->py_draw = NULL;
@@ -621,10 +616,6 @@ int BPY_menu_do_python(short menutype, int event)
 		return 0;
 	}
 
-	/* if in editmode, leave it, since changes a script makes to meshdata
-	 * can be lost otherwise. */
-	if (G.obedit) exit_editmode(1);
-
 	/* let's find a proper area for an eventual script gui:
 	 * (still experimenting here, need definition on which win
 	 * each group will be put to code this properly) */