Add overlap, adjacent operators for inet.
Move access macros and bitncmp function for inet to the header.
Add bitncommon function.
Add GiST support for inet.
Add tests for inet GiST.
Document overlap, adjacent operators for inet.
Remove adjacent operator for inet.
Change overlap example for inet.
Improve comments of the inet GiST functions.
Remove new line at of network_gist.c
Use memcmp on the inet_gist_same function.
Mention GiST for inet on the documentation.
Rename the result variable of the inet_gist_union function.
Update the copyright year on network_gist.c.
Add missing system include for compilation on FreeBSD.
Set geo_selfuncs for the network inclusion operators.
Drop default keyword for inet operator classes on btree_gist.
Add the new GiST supported network inclusion operators to the opr_sanity expected output.
Simplify the bitncommon function.
Improve inet GiST equality strategy.