[PING^2][PATCH 0/3] GNAT test suite fixes for build sysroot

[Arnaud Charlet]

> > In the course of setting up GCC regression testing for the RISC-V target 
> > I have discovered that the GNAT test suite does not correctly respond to 
> > the test environment settings passed from the test harness in my setup and 
> > consequently no test case works correctly.
> 
>  Ping for:
> 
> <https://gcc.gnu.org/ml/gcc-patches/2019-05/msg00754.html>
> <https://lists.gnu.org/archive/html/dejagnu/2019-05/msg00000.html>

Assuming good Ada test results with these changes for both
RISC-V and native linux x86_64, OK for me.

Arno