Eeschema: fix bug 1082107 (error message" component not found" when no component selected from select component dialog box)

their type, by using the more abstract PLUGIN::Footprint*() functions.

This is an intermediate phase only, other changes will be necessary as library table support comes in.
Encapsulate usage of library path searching, since that will go away as library table support comes in.
Add FOOTPRINT_EDIT_FRAME::{get,set}LibPath() and FOOTPRINT_EDIT_FRAME::{get,set}LibNickName() functions
to provide this encapsulation.

Add *.kicad_mod as default import footprint extension.  Turn on all Cu layers for thru hole pads in case loading non-wildcard s-expression footprint files.

remove -std=c++0x compiler option since nobody is ready for it, and accordingly back into auto_ptr from unique_ptr

   This required the additional compiler command line option "-std=c++0x".

2) Switch to unique_ptr from auto_ptr which is C++ deprecated.

3) Change to new English layer names per mailing list discussion, see class_board.cpp.

4) When saving to *.kicad_pcb or *.kicad_mod, identify opportunities to use wildcard
   layer sets, for pads so far.

5) Switch to two std::string hashtables in pcb_parser.cpp, away from one wxString based one
   for layer names and layer sets mapping. One hashtable holds the mask, the other the index.
   Layer sets are only in the mask table.

6) Move "LOCALE_IO toggle" into PCB_IO::Format() since it is a public API function and
   caller should find it as convenient as possible to use.  LOCALE_IO should handle
   nesting OK in the case where public Format() is called from one of the Footprint*()
   functions.

7) Drop support for "export module to new library".  Creating new libraries will have to
   be handled in concert with library table entries, and we've talked recently about
   creating a better footprint library manager, one that resides in a DLL/DSO.  So
   this kind of functionality needs to be handled in there in the near future.

8) Change name of exported PCB_IO module/footprint to *.kicad_mod and not *.emp.

pcb_calculator: fix a compil warning (gcc 4.7)

switch to new s-expression format for footprint exports, use english layernames for naked footprints, dodge conflict with pythons HAVE_GETC_UNLOCKED

can be parsed, since they do not have an overriding layer name map
like a BOARD does.

Avoid doubly looking up hashtable entries in m_layerMap.

Minor code reformatting.

switch from STREAM_OUTPUTFORMATTER to FILE_OUTPUTFORMATTER mostly throughout,and minor richio factoring

add class FILE_OUTPUTFORMATTER and use it in PCB_IO, since it is about 8-10 faster than STREAM_OUTPUTFORMATTER

fctsys.h: remove useless define.
Fix minor issues and add minor enhancements.

Fix a minor compatibility issue in .pro file for new boards, between decimils and nanometers versions of Pcbnew.

Eeschema: always stores sheet filename in unix-like notation, and fix a  bug when editing sheet file  name.
Pcbnew: add PDF format  for drill map generation.
Plotter classes: tweaking code.

Fix footprint library file extension bug in CvPcb and Pcbnew due to s-expression changes, fixes lp:1064593.

* Add footprint methods to PCB_IO.
* Add FP_CACHE and FP_CACHE_ITEM for handling new footprint library design.
* Add code to save legacy libraries in new format.
* Change behavior of BOARD_ITEM::GetLayerName() to return the default layer
  name when the item does not have a BOARD as a parent.
* Minor changes to the module output formatter when writing to module library
  files (no BOARD as parent).
* Add new (and some that I forgot along the way) CMake flags to
  EDA_BASE_FRAME::CopyVersionInfoToClipboard().
* Add -Wno-narrowing to GCC flags to stop GCC 4.7 from complaining about
  a conversion from int to unsigned in the Boost polygon library.
* Add INPUT_STREAM_READER to richio.cpp to allow using any object derived
  from wxInputStream as a LINE_READER (needs to be validated).

(the option with the smallest number of digits for coordinates created unacceptable truncation coordinates in Excellon drill files)

Pcbnew: drill files creation: better dialog to create driil files, map files and report file. Code cleaning

Pcbnew: fix an issue when collecting vias (for instance when left clicking on a via, it was not always detected)
This bug was mainly noticeable when using buried vias (some were never detected)
Minor other fixes (typos, strings hard to translate ...)