release v14.8

• rpmsysinfo.rb: fix encoding problem in open()
• cli.rb: ruby 1.8.7 doesn't support passing environment variables in popen(),
  some commands/tests need time to finish, an immediate io.close() will get
  us wrong exitstatus (broken pipe, code 13). so use 'timeout' module with a
  30s and process.wait for them to quit successfully.
• the oniguruma in ruby 1.8.7 doesn't support named group in regexp. so
  ditch the named group used in go_get_version in golang.req