ext/session/tests: more lenient expected output checks. (php#11631)

Several session tests incidentally check the values of INI variables
like session.name and session.save_path. This isn't the point of the
tests, and it can cause spurious failures if (for example) you want to
override your temporary directory while testing. So here, we make the
expected output patterns more lenient.

Author: orlitzky

ext/session/tests/bug74514.phpt

@@ -25,10 +25,10 @@ var_dump(session_save_path());
 var_dump(session_cache_limiter());
 var_dump(session_cache_expire());
 ?>
---EXPECT--
-string(9) "PHPSESSID"
-string(3) "foo"
-string(5) "files"
-string(0) ""
-string(7) "nocache"
-int(180)
+--EXPECTF--
+string(%d) "%S"
+string(%d) "%S"
+string(%d) "%S"
+string(%d) "%S"
+string(%d) "%S"
+int(%d)

ext/session/tests/bug74936.phpt

@@ -14,7 +14,7 @@ var_dump(session_cache_expire());
 var_dump(session_cache_limiter());
 var_dump(session_save_path());
 ?>
---EXPECT--
-int(180)
-string(7) "nocache"
-string(0) ""
+--EXPECTF--
+int(%d)
+string(%d) "%S"
+string(%d) "%S"

ext/session/tests/user_session_module/gh7787.phpt

@@ -78,10 +78,10 @@ session_write_close();
 
 ?>
 --EXPECTF--
-Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: , handler: MySessionHandler::write) in %s on line %d
+Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: %S, handler: MySessionHandler::write) in %s on line %d
 
-Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: , handler: MySessionHandler::updateTimestamp) in %s on line %d
+Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: %S, handler: MySessionHandler::updateTimestamp) in %s on line %d
 
-Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: , handler: write) in %s on line %d
+Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: %S, handler: write) in %s on line %d
 
-Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: , handler: update_timestamp) in %s on line %d
+Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: %S, handler: update_timestamp) in %s on line %d