Both david and alan suggested global icu use flag.  Specifically

On Thu, Feb 25 2016, David Haller wrote:

> Hello,
>
> On Wed, 24 Feb 2016, allan gottlieb wrote:
> [..]
>>dev-libs/libxml2:2
>>
>>  (dev-libs/libxml2-2.9.2-r4:2/2::gentoo, ebuild scheduled for merge) pulled 
>> in by
>>    
>> dev-libs/libxml2:2[!icu?,abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?]
>>  required by (dev-qt/qtwebkit-4.8.6-r1:4/4::gentoo, ebuild scheduled for 
>> merge)
>>                       ^^^^^
> [..]
>>  (dev-libs/libxml2-2.9.2-r4:2/2::gentoo, installed) pulled in by
>>    dev-libs/libxml2:=[icu] required by 
>> (www-client/chromium-48.0.2564.109:0/0::gentoo, installed)
>>                       ^^^
>
> Have you tried building with 'icu' use-flag for libxml2, the gstreamer
> stuff and qtwebkit? Try e.g.
>
>     USE="icu" emerge --pretend net-im/skype
>
> HTH,
> -dnh

Bingo.  When used with alan's list for abi_x86_32 (plus my small
addendum) portage is happy.

Thank you both
allan


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