updated for version 7.4.543
Problem:    Since patch 7.4.232 "1,3s/\n//" joins two lines instead of three.
	    (Eliseo Martínez)  Issue 287
Solution:   Correct the line count. (Christian Brabandt)
	    Also set the last used search pattern.
Added tag v7-4-543 for changeset f673842874b6
updated for version 7.4.544
Problem:    Warnings for unused arguments when compiling with a combination of
	    features.
Solution:   Add "UNUSED".
Added tag v7-4-544 for changeset 89143424f604
updated for version 7.4.545
Problem:    Highlighting for multi-line matches is not correct.
Solution:   Stop highlight at the end of the match. (Hirohito Higashi)
Added tag v7-4-545 for changeset d2239abd3edb
updated for version 7.4.546
Problem:    Repeated use of vim_snprintf() with a number.
Solution:   Move these vim_snprintf() calls into a function.
Added tag v7-4-546 for changeset 84190359b979