* Replace Eeschema find code with a collector based implementation.
* Fixed a search bug when all subsequent searches of an item would ignore
the remaining valid child items when an item had more than one child
item that matched the search criteria.
* Add SCH_FIND_COLLECTOR class to find all items that meet the specified
search criteria.
* Add SCH_FIND_COLLECT0R_DATA to keep track of information for all matching
items.
* Use collector to iterate over the list of items that match the search
criteria rather than trying to start at the last matched item.
* Remove unused searching methods from sheet path and sheet path list
objects.
* Add replace and replace all functionality to Eeschema find dialog.
* Push matching methods down to EDA_ITEM class so they can be used by
other derived objects.
* Add method to EDA_ITEM to test if item supports replacing.
* Add flag to find/replace data to support replace feature.
* Disable wild card matching check box when dialog is in replace mode as
wild card replacement is not supported at this time.
* The usual Doxygen comment and coding policy fixes.
* Fix bug in hierarchical searches using sheet path pointers which are
destroyed on every search. Use human readable path as last sheet found
in test to prevent comparison of deleted pointers.
* Fix a bug in SCH_COMPONENT::Matches() that would prevent searching for
pins if the search all fields flags was not set.
* Fix a bug in SCH_COMPONENT::Matches() to use the sheet path to perform
the comparison to the correct reference designator and unit number.
* Fix wrapping in sheet path and sheet path list MatchNextItem methods.
* Push search methods down to EDA_ITEM object so advanced searching can
be performed on all items derived from EDA_ITEM.
* Add virtual method to EDA_ITEM object to test if item supports replacing
text.
* Replace switch statement magic numbers in Eeschema socket connection code
with Pcbnew for improved readability.
Wayne Stambaugh