imagemagick 6.8.8-9
libdmtx doesn't need imagemagick
dmtx-utils uses imagemagick
autotrace: bump revision for imagemagick
Update revisions on imagemagick dependents
gtk+3 3.10.7

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gtk+3: add upstream patch to fix missing return value

Closes #27573.
openmpi 1.7.5

Closes #27792.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>