More useful support for low-end ARM architecture

ar can be followed here: http://lists.nongnu.org/archive/html/avr-libc-dev/2014-11/threads.html -- - - - - - - - - - - - - - - - - - - - Dipl. Ing. (FH) Markus Hitter http://www.jump-ing.de/

Re: testing policy for C/C++ front end changes

g. (FH) Markus Hitter http://www.jump-ing.de/