[PD-dev] Extended debian/rules for pd-externals (creb:abs~)

[Tom Schouten]

>    * creb (as a library. abs/*.pd are installed to $PDDIR/extra/creb.
>    You might want to comment remove abs.o from creb/modules/Makefile,
>    as abs~ is also in other libraries, at least 2 times. creb is a
>    candidate for Guenther's build/linux system, IMO, so my
>    rules-solution is only temporary and will fade away soon.)
>

just a quick note: i've disabled abs~ by default in creb. if you want it in, 
you'll have to include the -DHAVE_ABS_TILDE flag in the DEFS variable in 
Makefile.config (and Makefile.config_darwin)