BRINGUP: clarify the pre-rename estop references in dated records

meta-forgefirm/recipes-extended/rsyslog/rsyslog/rsyslog.conf

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+# /etc/rsyslog.conf - ForgeFIRM
+#
+# rsyslog is the only log writer on the machine. Every ForgeFIRM process
+# (forgectrl, grblHAL, gfcloud, gfhome), the kernel, and everything else
+# route to their own directory under /data/log/forgefirm. The per-logger
+# disk and remote levels come from /data/forgefirm.conf and are rendered
+# into the included rules file at every boot by `forgectrl
+# --render-syslog` (see the forgefirm-logging init script), so a change
+# made in the control panel applies at the next reboot.
+
+# Inputs: the local syslog socket and the kernel ring buffer. The
+# per-process rate limit bounds a runaway logger to a few hundred lines
+# per second so it cannot starve the machine; the emitters themselves
+# never block on this socket (they drop instead).
+module(load="imuxsock" SysSock.Use="on"
+       SysSock.RateLimit.Interval="10" SysSock.RateLimit.Burst="5000")
+module(load="imklog")
+
+global(workDirectory="/var/volatile/tmp"
+       maxMessageSize="16k")
+
+# One line format for every file: RFC 3339 timestamp with sub-second
+# precision, program[pid], SEVERITY, message.
+template(name="ff_line" type="list") {
+    property(name="timegenerated" dateFormat="rfc3339")
+    constant(value=" ")
+    property(name="programname")
+    constant(value="[")
+    property(name="procid")
+    constant(value="] ")
+    property(name="syslogseverity-text" caseConversion="upper")
+    property(name="msg" spifno1stsp="on")
+    property(name="msg" droplastlf="on")
+    constant(value="\n")
+}
+
+# The rendered per-logger rules (levels, remote target). Every message
+# is consumed there (each block ends in stop).
+include(file="/data/forgefirm/rsyslog-forgefirm.conf" mode="optional")
+
+# Reached only if the rules file is missing (a boot where the render
+# failed): keep everything, on disk, at info and above.
+if $syslogseverity <= 6 then action(type="omfile"
+    file="/data/log/forgefirm/system/system.log" template="ff_line"
+    asyncWriting="on" flushOnTXEnd="off" flushInterval="1"
+    fileCreateMode="0640" dirCreateMode="0755" createDirs="on")