test: make stailq.test tap-compatible

Part of #7618

NO_DOC=internal
NO_CHANGELOG=internal

test/unit/stailq.c

 #include "salad/stailq.h"
 #include <stdio.h>
 #include <stdarg.h>
+
+#define UNIT_TAP_COMPATIBLE 1
 #include "unit.h"
 
 #define PLAN		75

test/unit/stailq.result

-1..75
-ok 1 - list is empty
-ok 2 - list is empty after reverse
-ok 3 - first item
-ok 4 - last item
-ok 5 - element (foreach) 0
-ok 6 - element (foreach) 1
-ok 7 - element (foreach) 2
-ok 8 - element (foreach) 3
-ok 9 - element (foreach) 4
-ok 10 - element (foreach) 5
-ok 11 - element (foreach) 6
-ok 12 - first item
-ok 13 - head is not empty
-ok 14 - first entry
-ok 15 - shift item 0
-ok 16 - shift item 1
-ok 17 - shift item 2
-ok 18 - shift item 3
-ok 19 - shift item 4
-ok 20 - shift item 5
-ok 21 - shift item 6
-ok 22 - list is empty after shift
-ok 23 - next is empty
-ok 24 - element (foreach_entry) 6
-ok 25 - element (foreach_entry) 5
-ok 26 - element (foreach_entry) 4
-ok 27 - element (foreach_entry) 3
-ok 28 - element (foreach_entry) 2
-ok 29 - element (foreach_entry) 1
-ok 30 - element (foreach_entry) 0
-ok 31 - element (foreach_entry) 0
-ok 32 - element (foreach_entry) 1
-ok 33 - element (foreach_entry) 2
-ok 34 - element (foreach_entry) 3
-ok 35 - element (foreach_entry) 4
-ok 36 - element (foreach_entry) 5
-ok 37 - element (foreach_entry) 6
-ok 38 - head is empty after cut at first
-ok 39 - tail element after cut at first 0
-ok 40 - tail element after cut at first 1
-ok 41 - tail element after cut at first 2
-ok 42 - tail element after cut at first 3
-ok 43 - tail element after cut at first 4
-ok 44 - tail element after cut at first 5
-ok 45 - tail element after cut at first 6
-ok 46 - tail is empty after cut at last
-ok 47 - head element after cut at last 0
-ok 48 - head element after cut at last 1
-ok 49 - head element after cut at last 2
-ok 50 - head element after cut at last 3
-ok 51 - head element after cut at last 4
-ok 52 - head element after cut at last 5
-ok 53 - head element after cut at last 6
-ok 54 - head element after cut at middle 0
-ok 55 - head element after cut at middle 1
-ok 56 - head element after cut at middle 2
-ok 57 - head element after cut at middle 3
-ok 58 - tail element after cut at middle 4
-ok 59 - tail element after cut at middle 5
-ok 60 - tail element after cut at middle 6
-ok 61 - tail is empty after concat
-ok 62 - head element after concat 0
-ok 63 - head element after concat 1
-ok 64 - head element after concat 2
-ok 65 - head element after concat 3
-ok 66 - head element after concat 4
-ok 67 - head element after concat 5
-ok 68 - head element after concat 6
-ok 69 - element 0 (insert)
-ok 70 - element 1 (insert)
-ok 71 - element 2 (insert)
-ok 72 - element 3 (insert)
-ok 73 - element 4 (insert)
-ok 74 - first item (insert)
-ok 75 - last item (insert)