fix an issue created by commit 2954. Gerbview: display now an indicator of layers in use. minor code cleanup.

fixed bug 641982 (I hope)

removed in drawpanel an erroneous change (was made only for a test). drc code cleaning. cmakelist.txt changes in minizip.

quiet the newer g++ compilers, which complain about certain stdio function's return values not being used

* Created separate SVN version header.
* Add true config.h for platform dependency checks.
* Add dependency check cmake module.
* Remove some leftover hand crafted make files.
* Remove non-cmake build instructions from COMPILING.txt.
* Fix split _() strings causing Visual C++ compiler error.
* Fix lots of compiler warnings.
* Change project file parameter container from wxArray to boost::vector_ptr.
* Removed lots of redundant header definitions.
* Fixed green_xpm redefinition in ercgreen.xpm.
* Remove some dead code and unnecessary class methods.

* Require CMake version 2.6.1 on Windows and version 2.6.0 for other systems.
* Update FindSubversion to version from CMake 2.6.1 (localization issue solved).
* Remove FindwxWidgetsCVS and use the default one (some issues solved upstream).
* Formatting style changes.

* Set a NAME_RESOURCES variable in MinGWResourceCompiler.
* Fix looking for zlib under msys (C:\msys\1.0). Minizip now builds under windows with external zlib.

* Change tabs to spaces.
* Make Boost required.

If anyone can refine this, it is welcomed (see minizip/CMakeLists.txt for comments)

This allows you to install only specific components (i.e. binaries, resources, doc files in specific languages), particularly useful for package mainatiners.
Default install will work as before (i.e. install everything).

* REQUIRED is not necessary.
* Build instruction update.
* Do not build minizip on windows. Some more work is needed.

- Fix minizip build.
- Fix eeschema/plugins build.
- Update TODO.

set svn:eol-style property to native for all ascii files to support cross platform development