[boost] [modularization] Extracting lexical_cast from conversion

Subject: [boost] [modularization] Extracting lexical_cast from conversion
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2014-06-06 13:08:15

Conversion depends on Math and Range due to lexical_cast.

    /math/ <http://www.pdimov.com/tmp/report-6d1f271/math.html>

      |<boost/math/special_functions/fpclassify.hpp>|

  * from |<boost/lexical_cast.hpp>|

      |<boost/math/special_functions/sign.hpp>|

  * from |<boost/lexical_cast.hpp>|

    /range/ <http://www.pdimov.com/tmp/report-6d1f271/range.html>

      |<boost/range/iterator_range_core.hpp>|

  * from |<boost/lexical_cast.hpp>|

|Extracting LexicalCast   allows to break these cycle|s

Conversion  -> Math -> Conversion
                   -> Range -> Conversion

Best,
Vicente

P.S. This dependencies have been introduced lately while trying to make 
the implementation more efficient.