* tool/gperf.sed: extracted sed commands to a script. ANSI-C code
produced by gperf 3.1 declares length arguments as `size_t`. it
causes conflict with existing declarations, and needs casts for
a local variable and return statements.
[Feature #13883]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61076 b2dd03c8-39d4-4d8f-98ff-823fe69b080e