[xml] singularity in using C++ exceptions with libxml2 library

[Stanislav Ievlev <inger altlinux org>]

libxml2 needs rebuild with '-fexceptions' to avoid problems with
exceptions catching.

Attached program is a test to this problem.

With libxml compilled without "-fexceptions" this program cannot catch
exception from aborter() function

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With best regards
Stanislav Ievlev

Attachment: colorifer-test.tar.bz2
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