updated for version 7.3.1197
Problem:    ":wviminfo!" does not write history previously read from a viminfo
	    file.  (Roland Eggner)
Solution:   When not merging history write all entries.
Added tag v7-3-1197 for changeset 2fc1f3346bfb
updated for version 7.3.1198
Problem:    Build error when using Perl 5.18.0 and dynamic loading.
Solution:   Change #ifdefs for Perl_croak_xs_usage. (Ike Devolder)
Added tag v7-3-1198 for changeset 517fa1a34c7c