Preserve XST Re,Im order, so use g_user_size = 2 for complex data.

applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd

.../lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd

...ofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd