Remove getchar() patch which has been applied upstream.
Add recommanded post-release patch from upstream to fix 64-bit atomic
operations on 32-bit x86 with gcc versions older than 4.7.
Add a patch from upstream to fix FPE issue with uClibc-based toolchains.
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>