FIxes #5695: adapt relay server scripts to have dynamic groups
Fixes #4650: don't duplicate headers with Rudder agent
Merge pull request #501 from ncharles/bug_4650/int/duplicate_header

Fixes #4650: don't duplicate headers with Rudder agent
Fixes #5719: add support for large int on ansi systems
Merge pull request #514 from ncharles/bug_5719/int/fatal_error_on_irange

Fixes #5719: add support for large int on ansi systems
Merge pull request #509 from VinceMacBuche/bug_5695/update_script_node_relay

FIxes #5695: adapt relay server scripts to have dynamic groups