t5305: simplify packname handling

We generate a series of packfiles test-1-$pack,
test-2-$pack, with different properties and then examine
them. However we always store the packname generated by
pack-objects in the variable packname_1. This probably was
meant to be packname_2 in the second test, but it turns out
that it doesn't matter: once we are done with the first
pack, we can just keep using the same $packname variable.

So let's drop the confusing "_1" parameter. At the same
time, let's give test-1 and test-2 more descriptive names,
which can help keep them straight (note that we _could_
likewise overwrite the packfiles in each test, but by using
separate filenames, we are sure that test 2 does not
accidentally use the packfile from test 1).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5305-include-tag.sh

@@ -26,15 +26,15 @@ test_expect_success setup '
 '
 
 test_expect_success 'pack without --include-tag' '
-	packname_1=$(git pack-objects \
+	packname=$(git pack-objects \
 		--window=0 \
-		test-1 <obj-list)
+		test-no-include <obj-list)
 '
 
 test_expect_success 'unpack objects' '
 	rm -rf clone.git &&
 	git init clone.git &&
-	git -C clone.git unpack-objects <test-1-${packname_1}.pack
+	git -C clone.git unpack-objects <test-no-include-${packname}.pack
 '
 
 test_expect_success 'check unpacked result (have commit, no tag)' '
@@ -45,16 +45,16 @@ test_expect_success 'check unpacked result (have commit, no tag)' '
 '
 
 test_expect_success 'pack with --include-tag' '
-	packname_1=$(git pack-objects \
+	packname=$(git pack-objects \
 		--window=0 \
 		--include-tag \
-		test-2 <obj-list)
+		test-include <obj-list)
 '
 
 test_expect_success 'unpack objects' '
 	rm -rf clone.git &&
 	git init clone.git &&
-	git -C clone.git unpack-objects <test-2-${packname_1}.pack
+	git -C clone.git unpack-objects <test-include-${packname}.pack
 '
 
 test_expect_success 'check unpacked result (have commit, have tag)' '