updated for version 7.4.226
Problem:    Cursurline highlighting not redrawn when scrolling. (John
	    Marriott)
Solution:   Check for required redraw in two places.
Added tag v7-4-226 for changeset b650f2db8f96
updated for version 7.4.227
Problem:    Can't build with Ruby 1.8.
Solution:   Do include a check for the Ruby version. (Ken Takata)
Added tag v7-4-227 for changeset b0a9df477096
updated for version 7.4.228
Problem:    Compiler warnings when building with Python 3.2.
Solution:   Make type cast depend on Python version. (Ken Takata)
Added tag v7-4-228 for changeset 3ee5808a293c
updated for version 7.4.229
Problem:    Using ":let" for listing variables and the second one is a curly
	    braces expression may fail.
Solution:   Check for an "=" in a better way. (ZyX)
Added tag v7-4-229 for changeset 839cca5ec18d