Fix when 'Expires' and 'Cache-Control' headers are set
Fix when 'Expires' and 'Cache-Control' headers are set

Because the content-type of the response may change many times during the
request handling process, we must wait the #outh{} serialization to set it.

Note: 'Last-modified' header is also managed in a same way because there is
no good reason to set it before.

imtal/yaws,zephyrean/yaws,ca91/yaws,sebgod/yaws,andreineculau/yaws,andreineculau/yaws,patternmatched/yaws,bsmr-erlang/yaws,weisslj/yaws,phonohawk/yaws,patternmatched/yaws,toraritte/azith,patternmatched/yaws,bsmr-erlang/yaws,klacke/yaws,imtal/yaws,leoliu/yaws,klacke/yaws,klacke/yaws,bsmr-erlang/yaws,imtal/yaws,watonyweng/yaws,patternmatched/yaws,namjae/yaws,klacke/yaws,phonohawk/yaws,leoliu/yaws,capflam/yaws,capflam/yaws,namjae/yaws,capflam/yaws,ca91/yaws,imtal/yaws,patternmatched/yaws,bsmr-erlang/yaws,klacke/yaws,namjae/yaws,phonohawk/yaws,namjae/yaws,leoliu/yaws,leoliu/yaws,ca91/yaws,sebgod/yaws,sebgod/yaws,toraritte/azith,klacke/yaws,imtal/yaws,zephyrean/yaws,patternmatched/yaws,zephyrean/yaws,weisslj/yaws,capflam/yaws,ca91/yaws,phonohawk/yaws,sebgod/yaws,ca91/yaws,ca91/yaws,sebgod/yaws,imtal/yaws,watonyweng/yaws,namjae/yaws,namjae/yaws,weisslj/yaws,toraritte/azith,weisslj/yaws,imtal/yaws,bsmr-erlang/yaws,weisslj/yaws,phonohawk/yaws,watonyweng/yaws,andreineculau/yaws,toraritte/azith,andreineculau/yaws,zephyrean/yaws,zephyrean/yaws,bsmr-erlang/yaws,capflam/yaws,leoliu/yaws,namjae/yaws,weisslj/yaws,toraritte/azith,ca91/yaws,sebgod/yaws,toraritte/azith,weisslj/yaws,watonyweng/yaws,watonyweng/yaws,leoliu/yaws,sebgod/yaws,leoliu/yaws,bsmr-erlang/yaws,toraritte/azith,zephyrean/yaws,watonyweng/yaws,phonohawk/yaws,patternmatched/yaws,phonohawk/yaws,zephyrean/yaws,capflam/yaws,watonyweng/yaws,capflam/yaws,andreineculau/yaws,klacke/yaws