Please sync pcb 20070208 from Debian Unstable

[Aanjhan Ranganathan]

Request to Sync PCB 20070208 from Debian Unstable

Imporant portions of Changelog is below and the full changelog can also be found at http://pcb.sourceforge.net/news.html#20070208

1. Add polygon clipping code. This is a big change to how polygons are handled. The new code now removes islands and correctly identifies open circuits caused by a trace fully cutting through a polygon. In addition, the RS-274-X output is now simpler and works with some board houses that use older non-conforming sofware. Different styles for thermal reliefs are also now supported as part of the polygon clipper code.

2. Convert the m4 libraries to newlib libraries as part of building a distfile. The m4 libraries are still considered the sources and as such are still distributed but this eliminates the need for m4 at runtime for footprints.

3. Make pcb work under non-cygwin windows

4. Fix various bugs which would cause a crash

More nice addons have been done in this new upstream release. Please evaluate the request

[Aanjhan Ranganathan (aanjhan)]

Please evaluate the request

[Daniel Holbach (dholbach)]

ACKed.

[Martin Pitt (pitti)]

Synced.