Fix not working + and - keys in layers manager.
Fix typo errors and modify some messages to make translator's life more easy.

* Fix FindwxWidgets.cmake for V3.0 wxWidgets using 'win32' style find. i.e. for MinGW native build without msys or cygwin

Pcbnew, Eeschema: remove include file <protos.h> from a lot of files which do not need it.

all: remove include <protos.h>  from a lot of  files which do not need it.

https://lists.launchpad.net/kicad-developers/msg11965.html

Update demos. Fix  pspice netlist issues when using ( and ) in net names ( parenthesis are replaced by underscore) .

Commit patch about new better vrml export. patch to fix mirrored page layout when print mirrored is enabled ( page layout should not be mirrored)

[MacOSX] Added support in boost context for PPC processors, now is possible again compile kicad testing for PPC ( https://svn.boost.org/trac/boost/ticket/8266 )

Pray for angus johnson who is support too many languages, and needs to find a text editor that removes trailing whitespace.

Pcbnew: very minor fixes and update:  update clipper version. uncrustify polytri/* and fix some warning compil.