Fix pgindent comment breakage
Minor whitespace fix.
Plug memory leak in range_cmp function.

B-tree operators are not allowed to leak memory into the current memory
context. Range_cmp leaked detoasted copies of the arguments. That caused
a quick out-of-memory error when creating an index on a range column.

Reported by Marian Krucina, bug #8468.
Add regression tests for box column to matview.sql.
Merge branch 'master' into matview