Gerbview: very minor fix

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.

* Add net list object creation functions to schematic sheet and label
  objects.
* Remove function to add schematic object net list items as it is no
  longer needed.
* Add license statements to all modified files that required one.

* Add net list object creation functions to schematic component object.
* Remove external variables used by the verify bus label and parse bus
  label functions.
* Remove redundant net list object include sheet path member assignment.
* Add license statements to all modified files that required one.

* Define function to allow schematic objects to create their own net list
  objects.
* Add net list object creation functions to schematic line, junction, and
  no connect objects.
* Add license statements to all modified files that required one.

* Move the hierarchical label connected test into the NETLIST_OBJECT class.
* ERC pin type strings can now be translated.
* Remove unused EDA_DRAW_PANEL attribute from all ERC test functions.
* Add get marker count method to SCH_SCREENS object.
* Redundant header removal.
* Lots of coding style policy fixes.

* Add KiCad build option states to copy version information to clipboard
  function.
* Add a note to the main CMakeList.txt file to let developers know that
  new option states should be added to the copy version information to
  clipboard function.

(With a minor change for icon_cvpcb.svg: better look on dark backgrounds)
Fix bug 668200.

* Correct all user strings and comments for the correct capitalization of
  application names according to JP.  They are KiCad, Pcbnew, CvPcb,
  Eeschema, and GerbView.
* Add a note the the user interface policy about the correct capitalization.

* Add visible clearance when edit node or track segment,
  add parameter "show clearance for new or edited track with via area"
  in "Display options" menu.

* Translate French code names and comments.
* Dead code removal.
* Hot key object and structure coding style policy fixes.
* Doxygen comment warning fixes.

and text dialog editor did not handle properly negative rotation angles values.
Eeschema: fix bug when rotating (only using the Rotate hotkey) a field.

and text dialog editor did not handle properly negative rotation angles values.

* Move auto save time global variables into PCB_EDIT_FRAME object.
* Move footprint library name list global variable int PCB_EDIT_FRAME
  object.
* Improve library back up and temporary file error message strings and make
  them translatable.
* PCBNew string unification.
* Translate French code names and comments.
* Coding style policy and Doxygen comment fixes.

* More common header file compiler fixes.
* Translate French code naming and comments.
* Remove global variable ScreenPcb.
* Dead code removal.

* All header files used to create the PCB common library now compile as
  stand alone code.  This prevents the need to define them in a specific
  order to make source code compile properly.  It should also now be
  possible to relocate the source code to build the common PCB library
  to a separate folder.

Fix minor issues.
Fic compil issue in dimension.cpp with wxMSW 2.8.12 (wxMSW 2.8.12 only).

Edit component in schematic: reduce length of some texts (when translated, give a too big dialog)

* Remove sine and cosine look up tables from trigo.cpp and replace them with
  sin() and cos() math functions.
* Large include file clean up to prevent header ordering dependency build
  failures.
* Translate French code names and comments.
* Lots of coding style policy and doxygen comment fixes.