One more, and my fingers & brain are getting tired of these changes.
If someone wants to continue (and complete it during night here ;-), it's a simple job:
1) vtable.tbl - change existing signature of next infix operation - add inplace variant directly below it
2) imcc/parser_util.c:is_infix() - add the compare case for the MMD
3) make realclean; perl Configure.pl ... && make -s
4) fix all compiler errors in classes and dynclasses by looking at already converted functions and adding the inplace variants
4a) remove code from dynclasses/py*.pmc, if it's the same as the Parrot core base class, or adapt code
5) make test &&
6) svn ci
Thanks, leo