python: link with libdspstats
MultiFile: call actual loader's add_extensions() method.
compile the_decimator using PSRDADA_LIBS and PSRDADA_CFLAGS
GUPPI: Small tweaks for raw time-domain sampling mode data.
MultiThread: verbosity tweak
GUPPIFile: free temp memory buffer when file closed.
MultiFile: close each file when done with it.
GUPPIBuffer: ignore blocks until STTVALID happens.
Merge remote branch 'sf/master' into cudacyclo