Log message:
graphics: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Log message:
graphics: Remove SHA1 hashes for distfiles

Log message:
Add SHA512 digests for distfiles for graphics category

Problems found with existing digests:
	Package fotoxx distfile fotoxx-14.03.1.tar.gz
	ac2033f87de2c23941261f7c50160cddf872c110 [recorded]
	118e98a8cc0414676b3c4d37b8df407c28a1407c [calculated]
	Package ploticus-examples distfile ploticus-2.00/plnode200.tar.gz
	34274a03d0c41fae5690633663e3d4114b9d7a6d [recorded]
	da39a3ee5e6b4b0d3255bfef95601890afd80709 [calculated]

Problems found locating distfiles:
	Package AfterShotPro: missing distfile AfterShotPro-1.1.0.30/AfterShotPro_i386.deb
	Package pgraf: missing distfile pgraf-20010131.tar.gz
	Package qvplay: missing distfile qvplay-0.95.tar.gz

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.

Log message:
Import gimp-high-pass-filter-1.2 as graphics/gimp-high-pass-filter.
Packaged for wip by othyro.

A general purpose high-pass filter plugin. It shows up as
Filters->Generic->High Pass Filter. You can select a blur radius that sets the
size of detail to be passed by the filter, a contrast adjustment, as well as an
option to keep the source layer or replace it.

It actually implements 5 different high pass modes:

	1. Colour - I think this is the same as photoshop's high pass filter effect.
	2. Preserve DC - like colour, but adds the average image colour back in.
	3. Greyscale - this desaturates the layer before high pass filtering.
	4. Greyscale, Apply Chroma - as above, but blends it in with the source
		layer colours
	5. Redrobes - (named after the technique described by Redrobes)