adding ifu splitting to gris_split

grisred/gris_split.pro

@@ -103,8 +103,8 @@ pro gris_split,filebase
     hdr=strjoin(hdr)
     hdr=string(reform(byte(hdr),80,strlen(hdr)/80))
     if STRTRIM(SXPAR(hdr,"IMGSYS")) eq "IFU" then begin
-      print, "Splitting not implemented for IFU data yet."
-      print, "Skipping "+filebase
+      print, "Splitting IFU data."
+      split_ifu,filebase
       return
     endif