npwrapper: add build script and eliminate 64/32 bit paths
npwrapper: use system wide installed flash plugin
ebuild: add new dependencies
install-deps.sh: add flashplugin as dependency for arch linux.
PKGBUILD: git, release/desurium: add flashplugin as dependency.
npwrapper: get path to flash plugin from internal hardcoded list

I've also added a preprocessor variable, so we can add an entry from outside: FLASH_FALLBACK_PATH
We have just to use this within cmake