Added quartus files 

Updated mms_diag_tx/rx_seq.vhd with replicate/unreplicate seq in data. Verified OK with tb_mms_diag_seq.

Ported tb_tb_tb_dp_backpressure.vhd from /home/kooistra/svnroot/UniBoard_FP7/UniBoard/trunk to /home/kooistra/svnroot/UniBoard_FP7/RadioHDL/trunk.

Added REPLICATE_DP_DATA() and UNREPLICATE_DP_DATA() that are used by mms_diag_tx_seq.vhd and mms_diag_rx_seq.vhd.

 library.

 $UPE/base/common_dsp.py.

-Fixed corr_adder sign extension;
-Added g_inter_channel_delay to corr_visibility_buffer and fixed the 
 calculation of dp_src_out_timer's generics based on constants;
-Renamed g_nof_input_folds to g_input_unfold_factor in correlator.vhd;
-Added generics to tb_correlator to indicate which ones can be user set;
-Fixed the output location of the .rec file (moved to tb dir);
-Verified in sim using verify_correlator.py.