This puts the graphical/display options with the other similar options
in that dialog, rather than with the dimension options found in the Set
Grid dialog, which is in the Dimensions menu.
Also place the option itself in the GAL Display Options structure, so it
can be updated using the observer mechanism there.
The setter for the style in the GAL interface is removed, as the public
interface for setting this option is now to modify the
GAL_DISPLAY_OPTIONS structure and notify the GAL when done.
* Remove hard coded dialog size and let the sizers do their job.
* Minor UI policy text fixes.
* Minor text changes to improve readability.
* Minor tool tip changes to improve readability.
File "rules" has instructional text as comments near top.
2) Convert all text files in repo to LF line ending form.
Any checkout done with "rules" in play will convert the working
tree to native line ending, while keeping repo as LF line ending.
* Add visible clearance when edit node or track segment,
add parameter "show clearance for new or edited track with via area"
in "Display options" menu.