mogenerator: use archive URL

Closes #18734.
pngcrush 1.7.54

Closes #18743.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
imagemagick: build source with keg-only libtool.

References #14609.
Closes #18746.
jenkins 1.508

Closes #18745.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
libimobiledevice 1.1.5

Closes #18736.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
ghostscript 9.07

This update no longer builds against hombrew lcms2, because the modified
version that ships with ghostscript is incompatible. Without this change
the build would fail with this error:

  "_cmsPluginTHR", referenced from:
    _gscms_create in gsicc_lcms2.o
    ld: symbol(s) not found for architecture x86_64

Closes #18686.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
whatmask: use == in test
unac: needs newer autotools
unac: improve test
jshon: improve test
t1utils: fix test
git-tracker: improve test
iozone: fix test
enscript: improve test
sflowtool: improve test
justniffer: improve test
mp3fs: improve test
libvbucket: improve test
newick-utils: improve test
aamath: improve test