envutil.rb: refine messages

* test/ruby/envutil.rb (assert_file_predicate): place rest
  arguments after predicate name.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44202 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
logger.rb: fix extra log ratation

* lib/logger.rb (lock_shift_log): no need to rotate the log file
  if it has been rotated by another process.  based on the patch
  by no6v (Nobuhiro IMAI) in [ruby-core:58620].  [Bug #9133]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44203 b2dd03c8-39d4-4d8f-98ff-823fe69b080e