Revert geometrical mean calculation for partial bucket match on the f… …unction inet_hist_inclusion_selectivity.

Deprecate old network inclusion operators on the documentation. 

Simplify the bitncommon function. 

Update the copyright year on network_selfuncs.c. 

Update the copyright year on network_gist.c. 

Document overlap, adjacent operators for inet. 

Stamp 9.3.2. 

Stamp 9.2.6. 

Stamp 9.1.11. 

Stamp 9.0.15.