Labor_Usage

Change "labor_start" from tdatetime to tdatetimems.

Add "sublot_no" before "lab_cd" (string40, nullable) to record the sublot number against which labor is being recorded.

Add "raw_reas_cd" (string40, nullable) before "last_edit_comment" to record the underlying raw reason code for each record, if it was limited by a value from Factory Connector.

Rename "CHD_(L)Index_for_Steps" to "IX_labor_usage_job" as it is more descriptive.