1) Generalize SCH_ITEM owners (SCH_COMPONENT, SCH_SHEET, and now
SCH_GLOBALLABEL)
2) Generalize hypertext items
3) Use SCH_FIELD autoplace infrastructure for placing intersheet
references
4) Use textVar infrastructure for buildin intersheet references.
As an important side-effect this also fixes the undo issues with
intersheet refs.
CHANGED: In Schematic Setup->General->Formatting->Connections, added
pulldown for "Junction dot size" with values none, smallest, small
default, large, largest" Added support in "sch_painter.cpp" to not
paint junction when they have a diameter of "1" which is what "none"
sets as the diameter.
- Fix file extension for new project
- Fixes for exceptions on MSW
- Fix some ASAN issues
- Allow SETTINGS_MANAGER to run headless
- Don't flag schematic as modified after schematic setup is closed
- Don't automatically unload projects when LoadProject is called
- Don't unload project if it's the same as the current one
- Make sure to properly init/de-init template field names