packman-mirrorlist: don't just overwrite but backup mirrorlist file

People can have their own settings, if they don't want to use
the GeoIP-decided servers. Don't just lose those, but back up
properly if need.
Merge pull request #342 from imrehg/mirrorlist

packman-mirrorlist: don't just overwrite but backup mirrorlist file
Merge pull request #343 from tgc-dk/master

Fix for xbmc-rbp-git to support new automake version
Add package alarm/libbcm2835 for armv6h
Merge pull request #346 from cosmonaut/libbcm2835

Add package alarm/libbcm2835 for armv6h
extra/chromium to 24.0.1312.52-1
Merge branch 'master' of github.com:archlinuxarm/PKGBUILDs
community/nodejs > 0.8.17, system v8
community/percona-server => 5.5.28_rel29.3
alarm/ioquake3-rbp : because you know you want to
added aur/minizip
alarm/ioquake3-rbp : makedepends git
added aur/python2-ply
alarm/ioquake3-rbp: use http git
aur updates
extra/texlive-bin to 2012.0-7
add aur/python2-requests-0.14, remove python2-requests-0.10.0
remove aur/minizip, aur/python2-ply
added dfc PKGBUILD from AUR
aur/dfc: added buildarch=1 since it can be built for all platforms