Refresh gnulib-common.m4 (still serial 73)
There's an (comment-only) update to gnulib-common.m4 in gnulib upstream. Serial has not been changed. Update our copy.
To be backported to S3_0. Existing patch applies.
There's an (comment-only) update to gnulib-common.m4 in gnulib upstream. Serial has not been changed. Update our copy.