fix git conflict in corsave using the SAVE macro

Updated PFB Lib

Commiting cleaned up version of the faster pfb code that launches a 2D grid of blocks. Also commiting versions of the save threads that use the SAVE preprocessor macro when wanting to save to disk.

incorporated a faster version of the pfb that launches a 2D grid of blocks to compute the PFB operation instead of looping several times over a 1D grid. The FFT is still looped over a 1D structure. This is because in the current data structure the FFT cannot be batched such that it can perform the FFTs simulataneous as if it was a 2D grid of blocks. Another commit will include the cleaned up version of these code's before merge.

Modified dummy_fits_writer to terminate when STOP command is issued, to match the actual FITS writers provided by WVU

Finished initial build of beamformer/FRB correlator (BX mode). Data integrity and throughput tests upcoming

dual fx mode integration

Integration of fx mode into dealer/player and hashpipe. The big catch for this integration was that the previous xgpu library for the coarse correlator was built using a version of xgpu that was operating on ints. Adding a separate xpgu_pfb.h that operates at floating point and modifying other files to build a xgpu_pfb library that does this operation allows for dual fx operation.

Modified install script to clean in-between each use. Also enabled the PFB correlator plugin creation in Makefile.am

Increase flag_gpu_pfb_databuf to be compatible for a pfb correlation mode

Modified pfb correlator thread to match PFB thread. Also added conditional path setting to install script and CUDA path setting

Successful implementation of the PFB into hashpipe and dealer/player.