gm2-2022-03-16 on NetBSD 9.1 Sparc

[john o goyo]

Latest results:

                === gm2 Summary ===

# of expected passes            7629
# of unexpected failures        2065
# of unresolved testcases       2047


The library locations of gmp, mpc, and mpfr are still not propogated 
down to m2, despite being specified during configuration:

../../src/gcc-git/configure \
--prefix=$HOME/gm2/$VERSION \
--exec-prefix=$HOME/gm2/$VERSION \
--with-mpc=/usr/local \
--with-gmp=/usr/local \
--with-mpfr=/usr/local \
--enable-languages=c,c++,m2 \
--enable-threads=posix \
--disable-bootstrap

This was solved by adding the path to LD_LIBRARY_PATH.

(The same problem persists with the inclusion directories.  Here 
gcc/m2/Make-lang.in was modified.)

Sincerely,
john