patch 8.0.0744: terminal window does not use a pty

Problem:    A terminal window uses pipes instead of a pty.
Solution:   Add pty support.
diff --git a/src/os_win32.c b/src/os_win32.c
index f2fd808..8a38bcc 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -4964,7 +4964,7 @@
 }
 
     void
-mch_start_job(char *cmd, job_T *job, jobopt_T *options)
+mch_job_start(char *cmd, job_T *job, jobopt_T *options)
 {
     STARTUPINFO		si;
     PROCESS_INFORMATION	pi;