some cleanup.

Solved a minor bug in Search in lib command when attempt to search a component name in non loaded libraries

Now uses only an unique default pen size for plot/print and draw items (see changelog)

* Applied sheet reference plotting patch from Lorenzo.
* Fixed bug in Pcbnew plot dialog, ignore user scaling when controls are disabled.

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Minor others changes.

* 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.