c64_cass.xml: Promote gberet and other entries to working status (MT#08138) (#8881)

Software list items promoted to working
---------------------------------------
APB (Domark, alt) [C64 Ultimate Tape Archive V2.0]
The Flintstones (Grandslam) [C64 Ultimate Tape Archive V2.0]
Ghostbusters (Activision) [C64 Ultimate Tape Archive V2.0]
Green Beret (Imagine) [C64 Ultimate Tape Archive V2.0]

In response to MT#08138, I have tested and promoted gberet to working status and added a usage field that explains that the c1541 slot device needs to removed prior to loading.

I have also tested all other entries marked as not working and found both flintstn and ghostbsta also work if the c1541 slot device is removed prior to loading.  These entries have been updated in the same manner as gberet.

I also found apba also works regardless of whether the c1541 slot device is removed or not so this has also been promoted to working status.  In addition, whilst testing apba, I found that the game asks for Side 2 not Side B so I have corrected the side numbering for apb and apba.

hash/c64_cass.xml

@@ -953,34 +953,34 @@ Some are based on the C64 Tape Archive at https://archive.org/download/c64tapes/
 		<publisher>Domark</publisher>
 
 		<part name="cass1" interface="cbm_cass">
-			<feature name="part_id" value="Side A"/>
+			<feature name="part_id" value="Side 1"/>
 			<dataarea name="cass" size="582692">
 				<rom name="APB_Side_1.tap" size="582692" crc="6bd55d0f" sha1="54cadbb25e03ce82eeba4fd5a46db21f6236c9fb"/>
 			</dataarea>
 		</part>
 
 		<part name="cass2" interface="cbm_cass">
-			<feature name="part_id" value="Side B"/>
+			<feature name="part_id" value="Side 2"/>
 			<dataarea name="cass" size="591896">
 				<rom name="APB_Side_2.tap" size="591896" crc="2405c53d" sha1="2a8f9757d7c38462314aada36598f8b0c802c0a0"/>
 			</dataarea>
 		</part>
 	</software>
 
-	<software name="apba" cloneof="apb" supported="no"> <!-- tape loads but doesn't run (remains stuck showing black screen) -->
+	<software name="apba" cloneof="apb">
 		<description>APB (alt)</description>
 		<year>1989</year>
 		<publisher>Domark</publisher>
 
 		<part name="cass1" interface="cbm_cass">
-			<feature name="part_id" value="Side A"/>
+			<feature name="part_id" value="Side 1"/>
 			<dataarea name="cass" size="582695">
 				<rom name="APB_Side_1 (alt).tap" size="582695" crc="5feeaf42" sha1="adfe6390e092435638cb397d5b080b87c9e24b45"/>
 			</dataarea>
 		</part>
 
 		<part name="cass2" interface="cbm_cass">
-			<feature name="part_id" value="Side B"/>
+			<feature name="part_id" value="Side 2"/>
 			<dataarea name="cass" size="591908">
 				<rom name="APB_Side_2 (alt).tap" size="591908" crc="6d6b5ea1" sha1="7cbd62ddb837e401722978c0e9b301e71d9ddecb"/>
 			</dataarea>
@@ -5152,10 +5152,11 @@ Some are based on the C64 Tape Archive at https://archive.org/download/c64tapes/
 		</part>
 	</software>
 
-	<software name="flintstn" supported="no"> <!-- game loads but doesn't run (just displays a light blue screen) -->
+	<software name="flintstn">
 		<description>The Flintstones</description>
 		<year>1989</year>
 		<publisher>Grandslam</publisher>
+		<info name="usage" value="Ensure c1541 Slot Device is removed prior to loading"/>
 
 		<part name="cass1" interface="cbm_cass">
 			<dataarea name="cass" size="614404">
@@ -5895,10 +5896,11 @@ Some are based on the C64 Tape Archive at https://archive.org/download/c64tapes/
 		</part>
 	</software>
 
-	<software name="ghostbsta" cloneof="ghostbst" supported="no"> <!-- game loads fully but crashes with a blue screen as soon as it runs -->
+	<software name="ghostbsta" cloneof="ghostbst">
 		<description>Ghostbusters (Activision)</description>
 		<year>1984</year>
 		<publisher>Activision</publisher>
+		<info name="usage" value="Ensure c1541 Slot Device is removed prior to loading"/>
 
 		<part name="cass1" interface="cbm_cass">
 			<dataarea name="cass" size="467682">
@@ -6437,10 +6439,11 @@ Some are based on the C64 Tape Archive at https://archive.org/download/c64tapes/
 		</part>
 	</software>
 
-	<software name="gberet" supported="no"> <!-- game loads but doesn't run (just displays a black screen) -->
+	<software name="gberet">
 		<description>Green Beret</description>
 		<year>1986</year>
 		<publisher>Imagine</publisher>
+		<info name="usage" value="Ensure c1541 Slot Device is removed prior to loading"/>
 
 		<part name="cass1" interface="cbm_cass">
 			<dataarea name="cass" size="724171">