new version number for release of 4.7.0
updated Changelog, NEWS, etc.
updated po files for new release (make distcheck)
Merge remote-tracking branch 'origin/master' into v4.7.x

Conflicts:
	NEWS
Merge branch 'master' into v4.7.x
Fix repairing of arrow damage

The '2' bit in damage[][] to indicate the arrow was erroneously cleared,
rather than kept.
Remember window params of slave board

The slave board now has been assigned a WindowPlacement, which is also
saved in the settings file, through new options -slaveX/Y/W/H.
Fix repositioning of GTK windows

After 'hide' and 'show' GTK would not position the window in the same place,
but center it on the parent. Now we reposition the window after 'show' based
on the WindowPlacement data (if available).
Limit debug print to debug mode
Better handling of undefined window parameters

Repositioning and resizing a newly created dialog was based on the width
parameter of the stored sizing info being valid. Now it is separately
tested if the position is valid, so that sizing and moving can be done
independently. This allows us to store position info, but not size info
for the slave board, so that it automatically will use the size of the
main board when first opened.
Fix sizing of slave board GTK

For lack of a known method to specify a default size for Graph widgets,
we have to use the same system as for the main board: create with 0x0 size,
and measure the size of the outer window to determine margins.
After every popup we then resize to the required board size plus these
margins. (Awful...)
Suppress printing of status line in dual-board mode
Fix testing for valid window placement Xaw
Fix -topLevel option

This option was copletely ignored, after the refactorig.
Try to make life more bearable in Xaw menus

The alignment still sucks, but not as much as before.
Merge branch 'master' into v4.7.x
updated Changelog, NEWS, etc.
updated po/pot files
new version number for developer release
Merge branch 'v4.7.x' to get DIFFSTAT, Changelog, etc up to date in master

Conflicts:
	configure.ac
	winboard/config.h