Bug#927009: bsdmainutils: [calendar] wrong data before Octobar 1752

[Hideki Yamane]

control: tags -1 +upstream

 It comes from upstream, confirmed on FreeBSD 12.0

$ cal 9 1752
   September 1752     
Su Mo Tu We Th Fr Sa  
       1  2 14 15 16  
17 18 19 20 21 22 23  
24 25 26 27 28 29 30  
                      
                      
                      
$ uname -r
12.0-RELEASE