fix download of boost

gcontini

2020-10-09 fce381cc5d65702b51fda44d46d0422c82b729da

fix download of boost

 .travis.yml

@@ -209,7 +209,7 @@
               echo "Boost already installed"
           else
               echo "Boost not cached, compiling it"
               wget -q https://dl.bintray.com/boostorg/release/1.68.0/source/boost_1_68_0.7z
               wget -q https://versaweb.dl.sourceforge.net/project/boost/boost/1.68.0/boost_1_68_0.7z
               echo "Boost downloaded"
               travis_wait 20 7z x boost_1_68_0.7z -oC:/local
               cd "C:/local/boost_1_68_0"