In older GCC versions when an element in an anonymous unions/structures are
addressed by name, gcc must use -fms-extensions.
Change-Id: Id80617ad9336c7a02fbe613b58e3f337fa4baeee
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.xx.bhuvaragan@ericsson.com>
Fix cross-compile build error regarding to 'rpl_malloc'.
ipmitool actually does not need the GNU's malloc(0) behavior.
So, remove AC_FUNC_MALLOC from AC-script in order to help
cross-compiling ipmitool without need to directly specify
ac_cv_func_malloc_0_nonnull environment variable.
