patch 8.0.1465: python2 and python3 detection not tested

Problem:    Python2 and python3 detection not tested. (Matej Cepl)
Solution:   Add test for detecting python2 and python3.  Also detect a script
            using "js" as javascript.
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index ccf8016..62dbc74 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -561,10 +561,13 @@
       \ 'perl6': [['#!/path/perl6']],
       \ 'perl': [['#!/path/perl']],
       \ 'php': [['#!/path/php']],
-      \ 'python': [['#!/path/python']],
+      \ 'python': [['#!/path/python'],
+      \            ['#!/path/python2'],
+      \            ['#!/path/python3']],
       \ 'groovy': [['#!/path/groovy']],
       \ 'ruby': [['#!/path/ruby']],
       \ 'javascript': [['#!/path/node'],
+      \                ['#!/path/js'],
       \                ['#!/path/nodejs'],
       \                ['#!/path/rhino']],
       \ 'bc': [['#!/path/bc']],
diff --git a/src/version.c b/src/version.c
index 811d521..352d491 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1465,
+/**/
     1464,
 /**/
     1463,