Request_Line/Status_Line json: s/SIP_(Version)/$1/g
product json: remove 'product_' prefix
SIP_message json: s/(Request|Status)_Line/$1/g
Status_Line json: s/Status_Code/Code/g
Status_Line json: s/Reason_Phrase/Reason/g
other_(response/challenge) json: s/auth_(scheme)/$1/g
challenge/credentials json: use 'digest'/'other'
Content_Disposition json: s/disp_type/type/g
Retry_After json: s/delta_seconds/seconds/g
warning_value json: remove 'warn_' prefix
event_type json: s/event_package/package/g
Subscription_State json: s/substate_value/value/g
(Alert|Call|Error)_Info json: s/absoluteURI/URI/g
RAck json: s/response_num/RSeq/g, s/(CSeq)_num/$1/g
language_tag json: s/primary_tag/tag/g
name_addr, sipuriBuild(): s/_isNameAddr/$isNameAddr/g
srvr json: flatten userinfo/hostport

See aca3f60884e054e7b42b8aa6ce4f77f23f2ce0be
sippers.parse: set scope of SIP_message transforms/checks
helpers.list: prevent serialization from stack overflowing
net_path/abs_path: fix serialization