441a49b Add BUILD_DATE patch

Authored and Committed by c72578 a year ago
    Add BUILD_DATE patch
    
    - Add upstream patch:
      rrdtool-1.8.0-BUILD_DATE-fix.patch
    - Fixes null in the output of the build time:
      rrdtool
      RRDtool 1.8.0  Copyright by Tobias Oetiker <tobi@oetiker.ch>
                     Compiled 22 Mar 2022 00:00:00 (null)
    
        
file modified
+9 -1