buildroot

gcc on target: add missing definitions for gcc 4.4

Depending on the gcc version, the gcc include and lib directories have
changed. We include support for gcc 4.4 by copy/pasting the support
for gcc 4.3. Locations don't seem to have changed between 4.3 and
4.4. This allows the syslimits.h fixup to succeed.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>