Here we add a couple of fixes and improvements for ARC processors.
All except 1 patch are already in the upstream "master" branch
and will be an essential part of GCC 11.x whenever it gets released.
The most important are first 4 patches (0005-0008) which introduce
support of full native GDB support in Linux on ARC.
And the rests are tiny, yet useful improvements.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
