Issue #61: Fix 32-bit result for array test

Merge branch 'fixes_v12_2'

PGPRO-2534: Page get uninitialized because of PostingItem aligning

Issue #48: PostgreSQL 10.6 release didn't get rbtree renames

Handle it differently for PostgreSQL 10.6 and 10.7.

Issue #48: Renames for PostgreSQL 10 and 11 in rbtree structures and …

…functions

Port RUM to current master

Do not form a tuple with unitialized area

Fix compiling for PostgreSQL 10

Tag 1.1.0 release.

Tag for 1.0.0 release.