Martin Storsjö authored Mar 24, 2017 and Henrik Gramner committed May 21, 2017

Set up the right gas-preprocessor as assembler frontend in these cases,
using armasm as actual assembler.

Don't try to add the -mcpu -mfpu options in this case.

Check whether the compiler actually supports inline assembly.

Check for the ARMv7 features in a different way for the MSVC compiler.