[aur-general] merge request: avr32 toolchain

Please merge avr32_gnu_toolchain [1] and cross-avr32-gnu-toolchain [2] into avr32-gnu-toolchain [3] avr32-gnu-toolchain complies more or less with the recommended cross compiling tools package guidelines: https://wiki.archlinux.org/index.php/Cross_Compiling_Tools_Package_Guideline... cross-avr32-gnu-toolchain: my old version avr32_gnu_toolchain: not mine, but out of date since 2011-05-03 [1] https://aur.archlinux.org/packages/avr32_gnu_toolchain/ [2] https://aur.archlinux.org/packages/cross-avr32-gnu-toolchain/ [3] https://aur.archlinux.org/packages/avr32-gnu-toolchain/