chg: remove SSI_BLOCK_CHLD and SSI_UNBLOCK_CHLD
chg: remove HAVE_PSELECT
chg: in s_buff.cc: split s_close() up into s_close() and s_free()
chg: unset send_quit_at_exit for ssi:connect links
chg: add ssi:tcp launch mode links to the list ssiToBeClosed
chg: in slCleanUp(), kill the link before freeing the memory
chg: block SIGINT in child process after fork()
Merge pull request #313 from steenpass/links

preparations for signal handling in a dedicated thread