FILE *cgi_filehandle (CGI *cgi, const char *form_name);
ARGUMENTScgi - a pointer to a CGI struct allocated with cgi_init
form_name - the form name that the file was uploaded as
(not the filename) (if NULL, we're asking for the
file handle for the PUT upload)
DESCRIPTIONcgi_filehandle will return the stdio FILE pointer associated with a file that was uploaded using multipart/form-data. The FILE pointer is positioned at the start of the file when first available.