patch 9.0.0607: verbose echo message test fails on Mac OS

Problem:    Verbose echo message test fails on Mac OS.
Solution:   Skip the test on Mac OS.

src/testdir/check.vim

@@ -111,6 +111,14 @@ func CheckNotBSD()
   endif
 endfunc
 
+" Command to check for not running on a MacOS
+command CheckNotMac call CheckNotMac()
+func CheckNotMac()
+  if has('mac')
+    throw 'Skipped: does not work on MacOS'
+  endif
+endfunc
+
 " Command to check for not running on a MacOS M1 system.
 command CheckNotMacM1 call CheckNotMacM1()
 func CheckNotMacM1()

src/testdir/test_messages.vim

@@ -339,7 +339,8 @@ endfunc
 " Test verbose message before echo command
 func Test_echo_verbose_system()
   CheckRunVimInTerminal
-  CheckUnix
+  CheckUnix    " needs the "seq" command
+  CheckNotMac  " doesn't use /tmp
 
   let buf = RunVimInTerminal('', {'rows': 10})
   call term_sendkeys(buf, ":4 verbose echo system('seq 20')\<CR>")

src/version.c

@@ -699,6 +699,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    607,
 /**/
     606,
 /**/