Reviewed by Maciej.

    Reviewed by Maciej.

        - first fix on the road to can compile without Apple Internal headers installed

        * WebCore.pbproj/project.pbxproj: Added icu directory to header search path.

        * icu/README: Added.
        * icu/unicode/parseerr.h: Added.
        * icu/unicode/platform.h: Added.
        * icu/unicode/putil.h: Added.
        * icu/unicode/ubrk.h: Added.
        * icu/unicode/uchar.h: Added.
        * icu/unicode/uconfig.h: Added.
        * icu/unicode/uenum.h: Added.
        * icu/unicode/uidna.h: Added.
        * icu/unicode/uiter.h: Added.
        * icu/unicode/uloc.h: Added.
        * icu/unicode/umachine.h: Added.
        * icu/unicode/urename.h: Added.
        * icu/unicode/ustring.h: Added.
        * icu/unicode/utf.h: Added.
        * icu/unicode/utf16.h: Added.
        * icu/unicode/utf8.h: Added.
        * icu/unicode/utf_old.h: Added.
        * icu/unicode/utypes.h: Added.
        * icu/unicode/uversion.h: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@9272 268f45cc-cd09-0410-ab3c-d52691b4dbfc