Roll icu (122379 -> 122609)
Roll icu (122379 -> 122609)

This is to make clang happy. See http://codereview.chromium.org/9420032/
for the actual changes.

See also http://codereview.chromium.org/9355015/ (to suppress an unknown pragam warning in VS)

BUG=84851, 92756
TEST=Builds on all platforms go fine and clang does not complain about decNumber.c and colldata.cpp in ICU.
TBR=thakis
Review URL: https://chromiumcodereview.appspot.com/9418029

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@122611 0039d316-1c4b-4281-b951-d872f2087c98

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