qreal vs arm

Augment code that feeds a matrix of qreals to a gl matrix function, to
case off on whether a qreal is a float or a double.  (Yes: barf.)

See http://bugs.debian.org/718751
Merge branch 'tweaks'
log changes
silence compiler warnings: format string errors, string constant conversions
Merge branch 'tweaks'
log changes
debian/watch file