Merge readline tests for POSIX and Windows (GH-17171)

These test cases differ only in some details, so it doesn't make much
sense to have separate test cases, given that POSIX/Windows test pairs
are not unlikely to diverge over time (as can be seen here, where the
POSIX tests are skipped for repeat runs, but the Windows tests are
not).

Author: cmb69

ext/readline/tests/libedit_info_001-win32.phpt

@@ -4,9 +4,6 @@ readline_info(): Basic test
 readline
 --SKIPIF--
 <?php if (READLINE_LIB != "libedit") die("skip libedit only");
-if(substr(PHP_OS, 0, 3) == 'WIN' ) {
-    die('skip not for windows');
-}
 if (getenv('SKIP_REPEAT')) die("skip readline has global state");
 ?>
 --FILE--
@@ -28,11 +25,7 @@ array(%d) {
   ["line_buffer"]=>
   string(0) ""
   ["point"]=>
-  int(0)
-  ["end"]=>
   int(0)%A
-  ["library_version"]=>
-  string(%d) "%s"
   ["readline_name"]=>
   string(0) ""
   ["attempted_completion_over"]=>

ext/readline/tests/libedit_info_001.phpt

@@ -5,29 +5,25 @@ readline
 --SKIPIF--
 <?php if (!function_exists('readline_add_history')) die("skip");
 if (READLINE_LIB != "libedit") die("skip libedit only");
-if(substr(PHP_OS, 0, 3) == 'WIN' ) {
-    die('skip not for windows');
-}
 if (getenv('SKIP_REPEAT')) die("skip readline has global state");
 ?>
 --FILE--
 <?php
 
-$name = tempnam('/tmp', 'readline.tmp');
+$name = tempnam(sys_get_temp_dir(), 'readline.tmp');
 
 readline_add_history('foo');
 readline_add_history('');
 readline_add_history(1);
 readline_write_history($name);
 
-var_dump(file_get_contents($name));
+echo(file_get_contents($name));
 
 unlink($name);
 
 ?>
---EXPECT--
-string(20) "_HiStOrY_V2_
-foo
-
-1
-"
+--EXPECTREGEX--
+(_HiStOrY_V2_
+)?foo
+(
+)?1