Use U_ICU_VERSION_SHORT macro instead of hard-coding icu data dll and module
name.

BUG=8198
TEST=googleurl test should be built and run without a problem.
Patch by Jungshik Shin
Review: http://codereview.chromium.org/174265


git-svn-id: http://google-url.googlecode.com/svn/trunk@114 8873c55e-713a-0410-88f8-23d9c3d90b1b