MS: point labels on US82

[vespertine]

Found some point labels that may need adjusting on US82 in Mississippi.

• I think the MS69/182 label should just be MS69. MS182 veers away from its cosigning with MS69 here, before dead-ending at the river.
• Maybe the ReedRd point in Greenville should be MS814? While MS814 barely has any signage, it does have this sign near its intersection with US82.
• The MLKDr point in Greenwood should be MS744. MLK Dr is signed for its short existence as MS744 here.
• Also with the US49E_S point in Greenwood, Main St going north of here is signed at MS743. That said, I don't know enough about nomenclature rules to know if making the label US49E/743 is too clunky or not.

v.

[froggie]

I looked into these as part of my update/review of the Mississippi US routes (still ongoing).  Addressing the points in order:

• #1:  agreed.  Have changed it to just MS69 on both the US 82 and US 45 lists.
• #2:  agreed.  Has been changed to MS 814.
• #3:  the GMSV image vespertine linked is from 2008.  More recent GMSV shows no MS 744 signage at all, so I'm leaving it as MLKDr for now.
• #4:  as I understand the manual, in cases where there is both a lesser route and a "greater" route at the same point, including the lesser route is optional but not required.  Given that the existing point is in use, I'm going to leave it as-is.