patch 8.1.0316: swapinfo() test fails on Travis

Problem:    swapinfo() test fails on Travis.
Solution:   Handle a long host name. (Ozaki Kiichi, closes #3361)
            Also make the version check flexible. (James McCoy)
diff --git a/src/testdir/test_swap.vim b/src/testdir/test_swap.vim
index c12693c..ca4d8c2 100644
--- a/src/testdir/test_swap.vim
+++ b/src/testdir/test_swap.vim
@@ -105,9 +105,13 @@
   let fname = trim(execute('swapname'))
   call assert_match('Xswapinfo', fname)
   let info = swapinfo(fname)
-  call assert_match('8\.', info.version)
+
+  let ver = printf('VIM %d.%d', v:version / 100, v:version % 100)
+  call assert_equal(ver, info.version)
+
   call assert_match('\w', info.user)
-  call assert_equal(hostname(), info.host)
+  " host name is truncated to 39 bytes in the swap file
+  call assert_equal(hostname()[:38], info.host)
   call assert_match('Xswapinfo', info.fname)
   call assert_match(0, info.dirty)
   call assert_equal(getpid(), info.pid)
diff --git a/src/version.c b/src/version.c
index 6b79b6e..0ffd11e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    316,
+/**/
     315,
 /**/
     314,