remove font-valis-hd

thanks to ims and blzr for noticing.
opkg: fix wget call for plain downloads

when the non if-mod path is taken the downloaded file was written
directly to its destination. This is ok for most files, but
for feed indexes (Packages.gz) we still need to unzip them.
Therefor normal wgets should still download to a temporary location
first.
Merge branch 'master' of git://git.code.sf.net/p/openpli/openpli-oe-core