Fix Float#to_s specs to not depend on the platform representation of doubles
Fix Float#to_s specs to not depend on the platform representation of doubles

* AIX, Solaris, etc have a different binary representation.

git-svn-id: ab86ecd26fe50a6a239cacb71380e346f71cee7d@67401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

nobu/rubyspec,eregon/rubyspec,nobu/rubyspec,eregon/rubyspec,eregon/rubyspec,nobu/rubyspec,ruby/spec,ruby/spec,ruby/spec