MFH creating json1 and switching multiple gems to it

MFH: r430385 r430386 r430387 r430391 r430392 r430394 r430395 r430396 r430397 r430400 r430401 r430402 r430403 r430415 r430416 r430418

devel/rubygem-json1: create port

create port for 1.x version of rubygem-json for use by other ports that need to
depend on the older version of json

databases/rubygem-dm-serializer: switch to json 1.x dep

databases/ruby-dm-types: switch to json 1.x dep

devel/rubygem-activesupport4: switch to json 1.x dep

devel/rubygem-aws-sdk-v1: switch to json 1.x dep

devel/rubygem-rdoc3: switch to json 1.x dep

devel/rubygem-rubytree: switch to json 1.x dep

devel/rubygem-sdoc: switch to json 1.x dep

irc/rubygem-cogbot: switch to json 1.x dep

net-im/rubygem-termtter: switch to json 1.x dep

net-im/rubygem-tinder: switch to json 1.x dep

net/rubygem-amqp-utils: switch to json 1.x dep

net/rubygem-omniauth-twitter: switch to json 1.x dep

net/rubygem-qiniu: switch to json 1.x dep

net/rubygem-twitter: switch to json 1.x dep

devel/rubygem-json1: add portscout limit