Image Window
* Unpack operator now works.
* Some small layout code tweaks.
Info Window Header
* Moved to python UI code.
* template_running_jobs, template_operator_search added.
* Ported external data operators: pack/unpack all, make
paths relative/absolute, find/report missing files.
Also
* Report RPT_INFO too, not only warnings and errors.
* Run UI handle functions after RNA and Operators.
* Rename particle system add/remove operators, to not
include "slot", that's only there for materials because
that's what they are called now in RNA.
The basics for InfoSpace.
Also added InfoSpace data to area by default, older files allowed to
have nothing here (space empty). (prevents reported crasher in switching
space info to others).
Also: added ifdeffed code in readfile.c to debug missing memory frees
from data read from files. (instead of "data from SCR" it will print
the actual struct names).
