epson2: remove desc entries which are supported by other backends

Only the epson2.desc has entries pointing to other backends. Remove them
and update the backends which really support them instead.

doc/descriptions/epson2.desc

@@ -698,12 +698,6 @@
 :status     :unsupported
 :comment    "supported by the epkowa backend plus non-free interpreter"
 
-:model      "GT-7400U"			; product spec (JP)
-:interface  "USB"
-:usbid      "0x04b8" "0x0120"
-:status     :unsupported
-:comment    "supported by the snapscan backend"
-
 :model      "GT-7600S"			; product spec (JP)
 :interface  "SCSI"
 :status     :complete
@@ -745,11 +739,6 @@
 :usbid      "0x04b8" "0x011e"
 :status     :complete
 
-:model      "GT-8400UF"			; product spec (JP)
-:interface  "USB"
-:usbid      "0x04b8" "0x011f"
-:status     :unsupported
-
 :model      "GT-8500"
 :status     :untested
 
@@ -1655,11 +1644,6 @@
 :status     :complete
 :comment    "network interface supported via DFSG non-free iscan-network-nt package<br>all-in-one"
 
-:model      "Perfection 600"
-:interface  "SCSI"
-:status     :unsupported
-:comment    "supported by the umax backend<br>rebadged UMAX Astra 1200S"
-
 :model      "Perfection 610"		; command spec
 :interface  "USB"
 :usbid      "0x04b8" "0x0103"
@@ -1684,12 +1668,6 @@
 :status     :complete
 :comment    "overseas version of the GT-6700U"
 
-:model      "Perfection 660"
-:interface  "USB"
-:usbid      "0x04b8" "0x0114"
-:status     :unsupported
-:comment    "supported by the snapscan backend"
-
 :model      "Perfection 1200S"		; command spec
 :interface  "SCSI"
 :scsi       "EPSON" "Perfection1200" "processor"
@@ -1738,12 +1716,6 @@
 :status     :unsupported
 :comment    "supported by the epkowa backend plus non-free interpreter"
 
-:model      "Perfection 1270"
-:interface  "USB"
-:usbid      "0x04b8" "0x0120"
-:status     :unsupported
-:comment    "supported by the snapscan backend<br>overseas version of the GT-7400"
-
 :model      "Perfection 1600"
 :interface  "SCSI"
 :status     :unsupported
@@ -1780,18 +1752,6 @@
 :status     :complete
 :comment    "overseas version of the GT-8300UF"
 
-:model      "Perfection 1670"
-:interface  "USB"
-:usbid      "0x04b8" "0x011f"
-:status     :unsupported
-:comment    "supported by the snapscan backend"
-
-:model      "Perfection 1670 PHOTO"
-:interface  "USB"
-:usbid      "0x04b8" "0x011f"
-:status     :unsupported
-:comment    "supported by the snapscan backend<br>overseas version of the GT-8400UF"
-
 :model      "Perfection 2400 PHOTO"	; command spec
 :interface  "USB"
 :usbid      "0x04b8" "0x011b"
@@ -1986,12 +1946,6 @@
 :status     :good
 :comment    "overseas version of the GT-X980"
 
-:model      "Stylus CX1500"		; Australia
-:interface  "USB"
-:usbid      "0x04b8" "0x080c"
-:status     :unsupported
-:comment    "supported by the snapscan backend<br>all-in-one"
-
 :model      "Stylus CX2800"
 :interface  "USB"
 :usbid      "0x04b8" "0x0830"

doc/descriptions/snapscan.desc

@@ -305,6 +305,18 @@
 :mfg "Epson"
 :url "http://www.epson.com"
 
+:model "GT-7400U"	; product spec (JP)
+:interface "USB"
+:usbid "0x04b8" "0x0120"
+:status :good
+:comment "Requires firmware esfw3e.bin."
+
+:model "GT-8400UF"	; product spec (JP)
+:interface "USB"
+:usbid "0x04b8" "0x011f"
+:status :good
+:comment "Requires firmware esfw30.bin, film scanning unit untested."
+
 :model "Perfection 660"
 :interface "USB"
 :usbid "0x04b8" "0x0114"
@@ -315,7 +327,7 @@
 :interface "USB"
 :usbid "0x04b8" "0x0120"
 :status :good
-:comment "Requires firmware esfw3e.bin."
+:comment "Requires firmware esfw3e.bin.<br>overseas version of the GT-7400U"
 
 :model "Perfection 1670"
 :interface "USB"
@@ -323,6 +335,12 @@
 :status :good
 :comment "Requires firmware esfw30.bin."
 
+:model "Perfection 1670 PHOTO"
+:interface "USB"
+:usbid "0x04b8" "0x011f"
+:status :good
+:comment "Requires firmware esfw30.bin, film scanning unit untested.<br>overseas version of the GT-8400UF"
+
 :model "Perfection 2480 PHOTO"
 :interface "USB"
 :usbid "0x04b8" "0x0121"

doc/descriptions/umax.desc

@@ -333,7 +333,7 @@
 :model "Perfection 600"
 :interface "SCSI"
 :status :good
-:comment "OK, SCSI-ID=EPSON Perfection600"
+:comment "OK, SCSI-ID=EPSON Perfection600<br>rebadged UMAX Astra 1200S"
 
 :mfg "Escom"                      ; another manufacturer...