tests: improve test output

prefix each test output so its easier to see what is tested

tests/abuild-gzsplit.bats

@@ -15,13 +15,13 @@ teardown() {
 	cd "$startdir"
 }
 
-@test "abuild-gzsplit with 3.11 package" {
+@test "abuild-gzsplit: 3.11 package" {
 
 	run $ABUILD_GZSPLIT < "$datadir"/alpine-base-3.11.6-r0.apk
 	[ "$status" -eq 0 ]
 }
 
-@test "abuild-gzsplit with 3.12 package" {
+@test "abuild-gzsplit: 3.12 package" {
 	run $ABUILD_GZSPLIT < "$datadir"/alpine-base-3.12.0-r0.apk
 	[ "$status" -eq 0 ]
 }

tests/abuild.bats

@@ -3,10 +3,10 @@ setup() {
 	export ABUILD_SHAREDIR=$PWD/..
 }
 
-@test "help text" {
+@test "abuild: help text" {
 	$ABUILD -h
 }
 
-@test "version string" {
+@test "abuild: version string" {
 	$ABUILD -V
 }

tests/functions.bats

@@ -2,10 +2,10 @@ setup() {
 	export FUNCS=../functions.sh
 }
 
-@test "check if CBUILD is set" {
+@test "functions: check if CBUILD is set" {
 	. $FUNCS && test -n "$CBUILD"
 }
 
-@test "check that missing gcc does not kill us" {
+@test "functions: check that missing gcc does not kill us" {
 	sh -e -c "CC=false; . $FUNCS && test -z \"$CBUILD\""
 }