Also fixes a bug where ERC testing for text variables in sheet pins
would start with the wrong sheet.
Also fixes a bug where ERC testing of similar labels would use the
wrong sheet.
Also fixes a bug where ERC testing of bus-to-net conflicts would use
the wrong sheet.
Also fixes a bug where ERC didn't process variable references when
checking hierarchical labels against sheet pins.
Also fixes a bug where ERC multiple-drivers and netclass-conflicts
tests didn't set a sheetpath.
A sheetpath is required to correctly resolve text variables.
Depending on currentSheet is rife with bugs.
There are many places where we do *not* want to be prepending
field names to the field values, such as netlisting,
building PDF hypertext menus, etc.
Also, Find/Replace needs to work on unresolved text, as
that's what we're going to display (and if replace nuked
your variable references you wouldn't be happy).
Also moves most navigation code to SCH_NAVIGATION_TOOL.
Also changes page number href to anchor syntax ('#foo').
Also adds hypertext processing to SCH_TEXTBOXes.
Also adds combobox with schematic pages to text properties dialog.
Also fixes some plot bugs with arcs.
Also moves polygonization of arcs (when required) in plotting code
from 5 degrees to calculated based on ARC_HIGH_DEF.
Fixes https://gitlab.com/kicad/code/kicad/issues/5017
Jeff Young
Seth Hillbrand
Mike Williams
Jon Evans
jean-pierre charras
Marek Roszko