SVN copied data and hex directories so that they can be referred to from $RADIOHDL instead of from $UNB.
SVN copied python, doc, matlab sub directories in tb or src to $RADIOHDL as well.
Only common/hdllib.cfg still refers to $UNB because some low level components (multipliers) are not technology independent yet.

Renamed key hdl_lib_uses into hdl_lib_uses_synth and added new key hdl_lib_uses_sim for extra test_bench_files library dependencies.

Renamed build_sim_dir into build_dir_sim, similar build_dir_synth. Use <tool_name>_copy_key based on build type 'sim' or 'synth' from hdltool.cfg. Renamed sim_tool_name into tool_name_sim in hdltool.cfg, similar for synth_tool_name.

Used hdl_config.py with mode=1 to change build_synth_dir key value into /home/kooistra/svnroot/UniBoard_FP7/RadioHDL/trunk/build for all hdllib.cfg dictionary files.

- avoids need to compile the model in ip_stratixiv_lib, because it needs to be compiled first and should not be in the synth_files key.
- use model from Numonyx directory in $UNB, instead of the stripped copy in $UNB epcs/tb/vhdl/m25p128_model.
- Numonyx is now part of Micron company, but still keep it in the name.

Support local paths or using absolute paths with environment variables in the hdllib.cfg source files list.