BPython - first step for better integration of Python in Blender:

- add a new space: Space Script
- add a new dna struct: Script
- add these two properly everywhere they are meant to

It's not a tiny commit, but most of it is ground work for what is still to be done.
Right now the benefits should be: freeing the Text Editor to be used in a window even while a script w/ gui in "on" and letting more than one currently running script w/ gui be accessible from each window

Some files are added, so some build systems (not autotools) will need updates

source/blender/python/api2_2x/EXPP_interface.h

@@ -31,7 +31,10 @@
 
 #include <DNA_ID.h>
 
+struct Script;
+
 void initBlenderApi2_2x (void);
 void clearScriptLinks (void);
 ScriptLink * setScriptLinks(ID *id, short event);
 void discardFromBDict (char *key);
+void EXPP_move_to_spacescript (struct Script *script);