patch 8.0.0617: hardcopy test hangs on MS-Windows

Problem:    Hardcopy test hangs on MS-Windows.
Solution:   Check the postscript feature is supported.

src/testdir/test_hardcopy.vim

@@ -62,10 +62,12 @@ func Test_with_syntax()
 endfunc
 
 func Test_fname_with_spaces()
+  if has('postscript')
     split t\ e\ s\ t.txt
     call setline(1, ['just', 'some', 'text'])
     hardcopy > %.ps
     call assert_true(filereadable('t e s t.txt.ps'))
     call delete('t e s t.txt.ps')
     bwipe!
+  endif
 endfunc

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    617,
 /**/
     616,
 /**/