emerge complains that icu (details below) will overwrite files that MAY
belong to other packages.  But in fact none do.  The suggestion is to
ignore the collisions.  Does that mean I should simply rm the files
before retrying the emerge?

thanks,
allan

 * Messages for package dev-libs/icu-4.6.1:

 * Package:    dev-libs/icu-4.6.1
 * Repository: gentoo
 * Maintainer: arfrever@g.o
 * USE:        amd64 elibc_glibc kernel_linux multilib userland_GNU
 * FEATURES:   sandbox
 * Applying icu-4.6.1-parallel_installation.patch ...
 * This package will overwrite one or more files that may belong to other
 * packages (see list below). You can use a command such as `portageq
 * owners / <filename>` to identify the installed package that owns a
 * file. If portageq reports that only one package owns a file then do
 * NOT file a bug report. A bug report is only useful if it identifies at
 * least two or more packages that are known to install the same file(s).
 * If a collision occurs and you can not explain where the file came from
 * then you should simply ignore the collision since there is not enough
 * information to determine if a real problem exists. Please do NOT file
 * a bug report at http://bugs.gentoo.org unless you report exactly which
 * two packages install the same file(s). Once again, please do NOT file
 * a bug report unless you have completely understood the above message.
 * 
 * package dev-libs/icu-4.6.1 NOT merged
 * 
 * Detected file collision(s):
 * 
 * 	/usr/lib64/libicutu.so.46.1
 * 	/usr/lib64/libicuio.so.46.1
 * 	/usr/lib64/libiculx.so.46.1
 * 	/usr/lib64/libicutest.so.46.1
 * 	/usr/lib64/libicudata.so.46.1
 * 	/usr/lib64/libicui18n.so.46.1
 * 	/usr/lib64/libicuuc.so.46.1
 * 	/usr/lib64/libicule.so.46.1
 * 	/usr/lib64/icu/4.6.1/Makefile.inc
 * 	/usr/lib64/icu/4.6.1/pkgdata.inc
 * 	/usr/share/doc/icu-4.6.1/unicode-license.txt.bz2
 * 	/usr/share/doc/icu-4.6.1/html/readme.html
 * 	/usr/share/icu/4.6.1/install-sh
 * 	/usr/share/icu/4.6.1/license.html
 * 	/usr/share/icu/4.6.1/mkinstalldirs
 * 	/usr/share/icu/4.6.1/config/mh-linux
 * 
 * Searching all installed packages for file collisions...
 * 
 * Press Ctrl-C to Stop
 * 
 * None of the installed packages claim the file(s).
 * 
 * Package 'dev-libs/icu-4.6.1' NOT merged due to file collisions. If
 * necessary, refer to your elog messages for the whole content of the
 * above message.
 *