Update runtime files.
updated for version 7.3.866
Problem:    Not serving the X selection during system() isn't nice.
Solution:   When using fork() do not loose the selection, keep serving it.
	    Add a loop similar to handling I/O. (Yukihiro Nakadaira)
Added tag v7-3-866 for changeset 90d72df431e5
updated for version 7.3.867
Problem:    Matchparen does not update match when using auto-indenting.
	    (Marc Aldorasi)
Solution:   Add the TextChanged and TextChangedI autocommand events.
Added tag v7-3-867 for changeset 0fcb050fd79d
updated for version 7.3.868
Problem:    When at the hit-return prompt and using "k" while no text has
	    scrolled off screen, then using "j", an empty line is displayed.
Solution:   Only act on "k" when text scrolled off screen.  Also accept
	    page-up and page-down.  (cptstubing)
Added tag v7-3-868 for changeset b31989e2b058
updated for version 7.3.869
Problem:    bufwinnr() matches buffers in other tabs.
Solution:   For bufwinnr() and ? only match buffers in the current tab.
	    (Alexey Radkov)
Added tag v7-3-869 for changeset 23ce9a61bdc2
updated for version 7.3.870
Problem:    Compiler warnings when using MingW 4.5.3.
Solution:   Do not use MAKEINTRESOURCE. Adjust #if. (Ken Takata)
Added tag v7-3-870 for changeset 26e59a39fdd9
updated for version 7.3.871
Problem:    search('^$', 'c') does not use the empty match under the cursor.
Solution:   Special handling of the 'c' flag. (Christian Brabandt)
	    Add tests.
Added tag v7-3-871 for changeset d52c45b35fb0
updated for version 7.3.872
Problem:    On some systems case of file names is always ignored, on others
	    never.
Solution:   Add the 'fileignorecase' option to control this at runtime.
	    Implies 'wildignorecase'.
Added tag v7-3-872 for changeset edd0bc1f26bd
updated for version 7.3.873
Problem:    Cannot easily use :s to make title case.
Solution:   Have "\L\u" result in title case. (James McCoy)
Added tag v7-3-873 for changeset 7faeece39228