Log Message:
Update to 20070216 snapshot.  Many changes and improvements since the
last snapshot.  A highly abbreviated list is:

libgeda:
  - fixes to postscript output
  - fixes to arc handling
  - added some functions for embedding and deembedding symbols
  - many changes to the internal data structure.
  - fix a bug which could cause missing connectivity on a bus
  - improvements to attribute handling
  - fix a bunch of compiler warnings.
  - various other bug fixes

gschem:
  - improvements and bug fixes to the autonumber code
  - improvements to the various file selection dialogs
  - improvements to attribute handling
  - improvements to the internal data structure
  - various other bug fixes

gnetlist:
  - fixes for guile-1.8
  - update the gsch2pcb backend to allow running or never running m4 for pcb
    footprints.
  - changed "package" to "refdes" in the BOM/BOM2 backends
  - added a drc2 regression test
  - bugfix in the allegro backend
  - other misc fixes

symbols:
  - added 4 missing characters to complete the hungarian character set
  - add greek mu

gsymcheck:
  - man page improvements

gattrib:
  - enhanced sorting functions
  - various bug fixes

utils:
  - add an option to gsch2pcb to let the user prevent m4 from ever being run
    when looking for pcb footprints.
  - let gsch2pcb look both for "name" and "name.fp" when \ 
looking for a footprint
    called "name".
  - use some configure options to set the default gsch2pcb footprint search paths
    rather than hardcoding them.
  - added a gnet_hier_verilog.sh script to do non-flattened verilog netlisting
  - added options to gschlas to embed or de-embed all symbols in a schematic