Add the original mk (make) files for ICU 52

In the initial check-in of the ICU 52 tree, some *mk files were not 
checked in. 

BUG=132145
TEST=NONE

Review URL: https://codereview.chromium.org/245383002

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/icu52@265011 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
22 files changed