(1) fix macro invocation of _GDBN__ that didn't expand due to adjacent 's';
drwxr-xr-x - bfd
drwxr-xr-x - binutils
drwxr-xr-x - gas
drwxr-xr-x - gdb
drwxr-xr-x - include
drwxr-xr-x - ld
drwxr-xr-x - readline