* Factor change schematic component orientation code out of switch statement
into separate function.
* Remove redundant command events from schematic editor hot key handler.
* Change EDA_ITEM set flag function to set flag bits using logical or
instead of assignment.
* Add clear flag function to EDA_ITEM to clear flag bit using inverted
logical and.
* Factor change schematic text type code out of switch statement into
a single function call.
* Schematic text orientation function renaming improvements.
* Lots of small coding policy changes to updated files.
* Fix grid select box update bug on context menu.
* Fix via size and track width select box update bugs.
* Fix layer pair indicator button update bug.
* Fix auto track width tool bar control enable bug.
* Fix via size and track width select status bug in context menu.
* Fix layer select box and layer control widget select bug when current
layer is removed.
* Add virtual function to notify objects derived from EDA_DRAW_FRAME that
the units setting has changed.
* Coding policy class naming fixes.
* Merge three separate rotate code paths into a single rotate item function.
* Reduce three separate rotate command IDs into a single rotate command ID.
* Move pin rotate code into pin object.
* fix incorrect bounding box size calculation of schematic components.
* fix incorrect bounding box position and size used when schematic components are not found in lib (dummy lib componen used).
Pcbnew:
* Fix issues in block selection for arcs in modedit. Minor code cleaning.
CopyToClipboard: fix incorrect call to PrintPage (bad parameters)
* Merge two duplicate case statement and delete pin code paths into a
single delete function.
* Make all delete commands use new delete function.
* Fix a few set tool ID calls to use default cursor instead of arrow
cursor.
* Make EDA_DRAW_FRAME current tool ID member variable private.
* Added global no tool selected ID to replace application specific no
tool selected IDs.
* Change SetToolID to prevent setting the tool ID to anything less than
the new global no tool selected ID and assert on debug builds.
* Change command and update user interface command event handlers to use
new global no tool selected ID.
* Fixed schematic library editor add pin hot key handler.
jean-pierre charras
Marco Mattila
Wayne Stambaugh
Dick Hollenbeck
Andrey Fedorushkov