Evaluate truncate, ftruncate and ftello existence
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31798 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r31262 and r31264 from trunk into ruby_1_9_2.¶
Evaluate truncate, ftruncate and ftello existence
This corrects mingw-w64 compilation.¶
ruby needs HAVE_ macros to use our emulation functions.
(fix the problem of 31262)
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31798 b2dd03c8-39d4-4d8f-98ff-823fe69b080e