Log fix of ldns.pc installation
-1.8.1 2021-12-??
+1.8.1 2021-12-02
* bugfix #146: ldns-1.7.1 had soname 3.0, so ldns-1.8.x soname
needs to larger.
+ * Undo PR#123 fix ldns.pc installation when building out-of-source
1.8.0 2021-11-26
* bugfix #38: Print "line" before line number when printing
