Eeschema: fix crash in intermediate netlist generation when a component has no pins (like logos or images).
Pcbnew: texts in dimensions can be now moved.
Gerbview: fix incorrect number of layers  in export to pcbnew function.

Some code restyling: VECTOR_PCB is an array. Cleanup uncontrolled definitions of abs, max, etc. max is now overloaded function and MAX is a macro.

Metric KiCad work continues. Partially processed D_PAD class. It is still need to be tested including all these import and export procedures...

Pcbnew: remove useless code.
Doc: remobe obsolete reference to MINIZIP (which do not exist now)

* Replace C malloc() and free() functions with C++ new and delete
  operators or the appropriate STL container.
* Add option to end mouse capture function to skip executing the end
  mouse capture callback.
* Lots of coding policy and Doxygen comment goodness.

Add minor enhancements.

General design rules tab converted to nanoscale. A bit of refactorisation in via sizes. And build key is KICAD_NANOMETRE not KICAD_NANOMETRIC (as I stated in previous commit).

Added configuartion option KICAD_NANOMETRIC for this.
* With option set to false: *
- it should work and compile as usual
- some values are saved with decimal point (which should be backward/forward compatible as old versions should just drop fractional part)
* With option set to true: *
- lengths in Global Design Rules should be settable 1nm steps.
FROM/TO_LEGACY_LU(_DBL) macros introduced for easy interconnection between old and new units.

* Use version of DateAndTime that returns a wxString and delete the
  version that takes a char* as it is no longer required.
* Merge StrNumICmp() and StrLenNumICmp() into StrLenNumCmp() to create a
  single function for comparing strings with integers and remove a lot
  of duplicate code.
* Remove unused strupper from string.cpp.
* Use wxArrayString for sorting the EDA_LIST_DIALOG contents.

Pcbnew: Fix a membar issue: Layer setup incorrect location (seems due to an error when using copy/paste editor command)

* Modify algorithm to correctly calculate the virtual drawing size and
  offset required to place the drawing correctly under all conditions.
* Ignore default wxWidgets scroll keys on Windows in EDA_DRAW_PANEL key
  event handler.

Fix bug 887202.

Lee algorithm replaced by a Minimun Spanning Tree algo (using Prim's algorithm ).
Tested on a 5350 pads board, it is more than 100 times faster.
Also fix a crash when clicking on tool  "delete selected items" (main horizontal toolbar),
and remove this tool (currently, no code in Pcbnew for this tool)

Pcbnew: connect.cpp: enhanced ( faster and more powerful ) algorithm to calculate connections between pads.
Code cleaning.

More work about code refactoring in connect.cpp

This first draft should fix bug 851670 and is faster than existing alogorithm.

Pcbnew: fix minor issue: Footprint bounding box was too large for very small footprints (like SM0204) due to the minimal size value used in  calculations.

Now it select module from selected side if present. Especially handy in contrast view.

BOOST POLYGON is always used in zone filling functions.
Kbool is still in use in other calculations.

* Fixed bug on Windows that prevented the menu short cuts from working
  properly.
* Fix duplicate menu short cut keys in KiCad, Pcbnew, and Eeschema.
* Add menu short cuts for all possible menu entries.

Fix confusing labels in libedit (for pins and graphic items sharing)

* Grammar and spelling fixes in Eeschema, CvPcb, and Pcbnew path and
  library dialog tool tips.
* Translate the French file name subrill.cpp to highlight.cpp.
* Lots of coding style policy fixes.

All: fix some strings very hard to translate in messages.

* Factor test for auto save file into base frame class.
* Added auto save feature to Eeschema for saving schematics, addresses
  launchpad question 173631.
* Add auto save interval control to Eeschema options dialog.
* Fix problem with subsequent auto saves in last commit.

* Factor auto save common code into base frame class so all frame windows
  can take advantage of the shiny new auto save goodness.
* Use a timer instead of depending on mouse and keyboard events to trigger
  an auto save.
* Check for auto save file when opening a board and ask user if they
  wish to use the auto save file or the last saved board file.
* Protect all base frame public members.