Synopsis
		sfsepcmplx2rsf file= preserve_t=y verb=n

I.e. from

esize=8 data_format=xdr_float

to

esize=8 data_format=xdr_complex

This combination is tolerated by SEPlib versions released after 2011-01-20,
and required by all versions of Madagascar. Previous to the date above, it
was impossible to have a complex single-precision dataset that was valid both
in SEPlib and Madagascar

This program opens the SEPlib file in read-write mode!

Handles in=stdin case (header and data in one file)

Parameters
		string file= Name of file to process   bool preserve_t=y [y/n] Whether to preserve timestamp   bool verb=n [y/n] Say if file was converted or unchanged