Change all of the component tree helper objects to use LIB_IDs instead of
LIB_ALIAS pointers. LIB_ALIAS pointers are dangerous to use because they
can be deleted in the symbol library editor while the component chooser
dialog has copies of them. With LIB_IDs, the LIB_ALIAS pointer is found
on demand and can be guaranteed to be valid.
Update the chooser dialog to load the symbol library table instead of the
libraries defined in the project file and return a LIB_ID instead of a
LIB_ALIAS pointer.
Modify SCH_BASE_FRAME::SelectComponentFromLibrary() to handle the LIB_IDs
returned from the component chooser dialog.
This was the behavior before the factoring out of COMPONENT_TREE. Moving
the history at the top just required inserting it at the right point;
fixing preselect involved wxEVT_INIT_DIALOG not propagating to the
panel. Simple solution was to move the parts of that event handler to
the constructor as they didn't have to be in an event handler anyway.
Fixes: lp:1707538
* https://bugs.launchpad.net/kicad/+bug/1707538
Wayne Stambaugh
Chris Pavlina
Maciej Suminski