enigma2-plugin-extensions-backupsuite: change LIC_FILES_CHKSUM

The former license file contained spaces, this has been adjusted by the maintainer.
Add ofgwrite to RDEPENDS.
Remove unneeded RRECOMMENDS.
enigma2-plugin-extensions-backupsuite: add mtd-utils to RDEPENDS

mtd-utils got lost as RDEPEND in 244842330d4e3780bc40d04402ed60c72e28228a
openpli-image: add OPTIONAL_BSP_PACKAGES

We use this as a means to include machine specific packages from a bsp layer into our OPTIONAL_PACKAGES(feed).
For adding bsp specific packages to our image MACHINE_EXTRA_RDEPENDS can be used.
enigma2-plugin-extensions-tuxcom: update svn revision, fix tuxcom binary location
openpli-enigma2-image: re-add enigma2-plugin-extensions-tuxcom

This reverts 8baea9d6cf7309945e184e2f7ace5fa9337d752d
Merge branch 'master' of git://git.code.sf.net/p/openpli/openpli-oe-core