testing/*: update sourceforge url

testing/arj/APKBUILD

testing/asymptote/APKBUILD

testing/atomicparsley/APKBUILD

testing/aufs-util/APKBUILD

testing/avarice/APKBUILD

testing/cscope/APKBUILD

testing/dfu-util/APKBUILD

testing/dvdbackup/APKBUILD

testing/emacspeak/APKBUILD

testing/extundelete/APKBUILD

testing/flightgear/flightgear.post-install

testing/flwm/APKBUILD

testing/gutenprint/APKBUILD

testing/hexinject/APKBUILD

testing/htmlcxx/APKBUILD

testing/idesk/APKBUILD

testing/ima-evm-utils/APKBUILD

testing/libmhash/APKBUILD

testing/libspnav/APKBUILD

testing/libxml++/APKBUILD