Version 0.2.01

Added bit-depth selection again.
Fixed problem with bilevel scanning with Perfection610: The
line count has to be an even number with this scanner.
Several initialization fixes regarding bit depth selection.
This version goes back into the CVS repository, the 1.0.4
release is out and therefore the code freeze is over.
Some general cleanup, added more comments

backend/epson.desc

@@ -10,7 +10,7 @@
 ;
 
 :backend "epson"                  ; name of backend
-:version "0.1.39"                 ; version of backend
+:version "0.2.01"                 ; version of backend
 :status :beta                     ; :alpha, :beta, :stable, :new
 :manpage "sane-epson"             ; name of manpage (if it exists)
 :url "http://www.freecolormanagement.com/sane"        ; backend's web page
@@ -76,6 +76,9 @@
 :model "Perfection 1240"
 :interface "SCSI USB"
 
+:model "Perfection 1640"
+:interface "SCSI USB"
+
 :model "Expression 636"
 :interface "SCSI"
 
@@ -83,8 +86,7 @@
 :interface "SCSI"
 
 :model "Expression 1600"
-:comment "only 8/24 bit mode supported at this time - an experimental version with support for 12/36bit can be found at <A HREF=\"http://www.freecolormanagement.com/sane\">http://www.freecolormanagement.com/sane</A>"
-:interface "SCSI USB"
+:interface "SCSI USB IEEE-1394"
 
 :model "FilmScan 200"
 :interface "SCSI"

backend/epson.h

@@ -111,6 +111,7 @@ enum
 	{ OPT_NUM_OPTS = 0
 	, OPT_MODE_GROUP
 		, OPT_MODE
+		, OPT_BIT_DEPTH
 		, OPT_HALFTONE
 		, OPT_DROPOUT
 		, OPT_BRIGHTNESS