had to revise pdlibbuilder script to get it to build on OSX. Can't really push it upstream as it's just a hack (and upstream has been aware of the problem for some time...)

handle the discrepancy between submodule name "lyonpotpourri" and libdir name "lyon" more gracefully

get rid of erroneous lyon/lyonpotpourri folder so as to start completely over with the lyonpotpourri submodule

shorten lyonpotpourri to lyon in Makefile to match the new submodule name (which itself was changed to match Pd-l2ork)

Add missing dlls to Windows installer, add dynamic lib extensions for Windows and OSX to scripts/load_all_binaries.pd

* fix typo introduced into tar_em_up.sh
* remove flext and rtcmix from LIB_TARGETS
* selectively compile disis classes on Windows
* use Program Files (x86) for win64

remove dependence on libiberty for mingw in Makefile (not sure whether Cyrille will do this upstream)

moved cwiid and all disis libs except disis_munger to externals/disis, and removed linux-specific build instructions from tar_em_up.sh

begin porting the disis_* dirs to a single library in externals/, starting with disis_phasor~.c.  We're just using the most recent version of pdlibbuilder to do the heavy lifting.

apply Matt Barber's patches for building on OSX: Changed LDFLAGS to point to pd-l2ork rather than pd