Change output directory structure

[JulianKemmerer]

To have a sub directory of just HDL files - likely as hdl/v/ and hdl/vhdl/

And other separate directories for all the logs and other just produced by tools...

Starts with GET_OUTPUT_DIRECTORY in SYN.py and other uses of SYN_OUTPUT_DIRECTORY

There exists sometimes (in SETUP_EDAPLAY in EDAPLAY.py) an all_vhd_files output dir - but idk if thats best way to go, copying into new dir at end - instead of being separate from start hmmm...

Want to have ex. output quartus ip .qip file use paths as correct too...