bug#7603: 24.0.50; compilation of NS variant fails with too old libxml2

[Peter Dyballa]

Hello!

Looking into the configure and config.log files and experimenting with  
pkg-config it seems that configure checks for the wrong version  
number. Instead of 2.2.0 (maybe a years old version number) a larger  
value/more recent version number should be checked, obviously greater  
than 2.6.16 to satisfy the dependency from

        typedef enum {
            HTML_PARSE_RECOVER = 1<<0,
            HTML_PARSE_NOERROR = 1<<5,
            HTML_PARSE_NOWARNING= 1<<6,
            HTML_PARSE_PEDANTIC = 1<<7,
            HTML_PARSE_NOBLANKS = 1<<8,
            HTML_PARSE_NONET = 1<<11,
            HTML_PARSE_COMPACT = 1<<16
        } htmlParserOption;

in .../include/libxml2/libxml/HTMLparser.h.

--
Greetings

  Pete

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