This was leaking windows headers and partial wx headers to 1084 compilation units......
This also means math/util.h is leaking to 1084 compilation units which seems a bit high too.
The editor has an entry to set a comment associated to a graphic item.
It is only for the designer, but the code to save it in .wks file when not empty was missing.
The code to read it exists since the beginning, so no change in file format
Keeping them in base_units means that we can't introduce
any dependence on these functions to anything that needs to
compile without one of the unit defines (EESCHEMA, PCBNEW, etc)
Jeff Young
Marek Roszko
Wayne Stambaugh
jean-pierre charras
Jon Evans
Jonathan Haas