Updated runtime files. Remove version checks for Vim older than 6.0.

runtime/doc/todo.txt

@@ -1,4 +1,4 @@
-*todo.txt*      For Vim version 7.4.  Last change: 2016 Aug 27
+*todo.txt*      For Vim version 7.4.  Last change: 2016 Aug 30
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -37,6 +37,25 @@ not be repeated below, unless there is extra information.
 Make ":filter" work with more commands.
 Search for: msg_putchar('\n')
 
+Try building with $SHADOWDIR
+
+Test_sign_completion() fails on MS-Windows (console and GUI)  Completion
+doesn't have both tb_paste.xpm and tb_print.xpm but "tb_p".  Different default
+options?
+
+Test_nb_basic() fails on MS-Windows GUI. line 12: Expected 2 but got 1.
+line 13: Expected 20 but got 1.
+
+Figure out building with Ruby on MS-Windows.
+
+:cexpr doesn't trigger QuickFixCmdPost. (Mathias Stearn, 2016 Aug 29, #1021)
+Needs documentation. (Yegappan)
+
+Patch to convert test_marks to new style. (Yegappan, 2016 Aug 28, 2 msg)
+
+Patch to make it possible to define a test but skip it, by throwing an
+exception. (Christian Brabandt, 2016 Aug 30)
+
 +channel:
 - Implement |job-term| ?
 - Channel test fails with Motif.  Sometimes kills the X11 server.
@@ -186,6 +205,9 @@ Ramel Eshed: system() is much slower than job_start(), why? (Aug 26)
 Patch for Python: #622. (Roland Puntaier, 2016 Feb 2)
 What does it change?
 
+Patch to make gd and gD work better for non-K&R code and with comments.
+(Anton Lindqvist, 2016 Aug 29)
+
 When generating the Unicode tables with runtime/tools/unicode.vim the
 emoji_width table has only one entry.