Log Message:
p5-XML-LibXSLT: update to 1.99.

1.99    2020-01-16
    - Remove checks for libxslt versions
        - https://rt.cpan.org/Ticket/Display.html?id=131155
        - Thanks to SREZIC and others
        - These checks were much maligned.

1.98    2020-01-16
    - Replace xslt-config with plkg-config
        - The former is going away
        - https://github.com/shlomif/perl-XML-LibXSLT/pull/3
        - Thanks to Debian.

1.97    2020-01-14
    - Tests hot fix for https://rt.cpan.org/Public/Bug/Display.html?id=131457
        - Tests failed with XML::LibXML v 2.0202
        - Thanks to jplesnik from Red Hat.