update to icu has again broken all the macports-clang compilers

[Ken Cunningham]

not exactly sure how I'm going to get around this just yet

have to find some compiler that still works somewhere -- gcc? to rebuild libxmls2 and then again rebuild libxml2 +universal once some clang works again...

configure:3623: $? = 1
configure:3643: checking whether the C compiler works
configure:3665: /opt/local/bin/clang-mp-3.7 -pipe -Os -arch x86_64 -arch i386 -I/opt/local/include -L/opt/local/lib -Wl,-headerpad_max_install_names -arch x86_64 -arch i386 conftest.c  >&5
dyld: Library not loaded: /opt/local/lib/libicui18n.65.dylib
  Referenced from: /opt/local/lib/libxml2.2.dylib
  Reason: image not found