patch 8.0.1087: Test_terminal_cwd is flaky

Problem:    Test_terminal_cwd is flaky. MS-Windows: term_start() "cwd"
            argument does not work.
Solution:   Wait for the condition to be true instead of using a sleep.
            Pass the directory to winpty.

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1087,
 /**/
     1086,
 /**/