Removing all the subarchitectures from config; reverting to the old archs I used.
Core now has an array of supported architectures cued off the compiler.
execute_commandline now returns a tuple (success, output/error)
Cleaning up fetch_product_arch_and_configs method.
xcode: renaming architecture for armv8
Moved architecture stuff to build -- it also checks with the target platform before proceeded to ensure support.
compilers: modifying the way we determine support for architectures. Now keyed off gcc -dumpmachine.