patch 7.4.876

Problem:    Windows7: when using vim.exe with msys or msys2, conhost.exe
            (console window provider on Windows7) will freeze or crash.
Solution:   Make original screen buffer active, before executing external
            program.  And when the program is finished, revert to vim's one.
            (Taro Muraoka)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    876,
 /**/
     875,
 /**/