2) added performance test direcories
3) added verification directories and files for readbin abd writebin verification with octave
Changes to be committed:
modified: Makefile
modified: dspl/src/inout.c
modified: dspl/src/statistic.c
new file: dspl/src/xcorr.c
new file: examples/src/xcorr_cmplx_test.c
new file: examples/src/xcorr_test.c
modified: include/dspl.c
modified: include/dspl.h
new file: performance/Makefile
new file: performance/bin/.gitignore
new file: performance/obj/.gitignore
new file: performance/src/xcorr_cmplx_performance.c
new file: verification/Makefile
new file: verification/bin/dat/.gitignore
new file: verification/bin/octave/readbin.m
new file: verification/bin/octave/writebin.m
new file: verification/bin/octave/writebin_readbin_verification.m
new file: verification/bin/python/.gitignore
new file: verification/obj/.gitignore
new file: verification/src/writebin_readbin_verification_complex.c
new file: verification/src/writebin_readbin_verification_double.c
new file: verification/verif.sh