Update doc links
merge nathanlws: Update installer doc links

Merge pull request #944 from nathanlws/sql-layer/update-installer-conclusions
https://github.com/FoundationDB/sql-layer/pull/944
Suppress a handful of tests not compatible with random
merge nathanlws: Skip somes yamls that are incompatible with random context

Merge pull request #945 from nathanlws/sql-layer/skip-yamls-random-context
https://github.com/FoundationDB/sql-layer/pull/945
Subclass Sorter as to not require always going to file/double writing.
Comment derived class
Bump dependency
Only MergeJoinSorter closes
Set list to null after deleting
merge nathanlws: Subclass Sorter to provide a pull based interface

Merge pull request #947 from nathanlws/sql-layer/pull-based-sorter
https://github.com/FoundationDB/sql-layer/pull/947
Failing test
Manually tack close state
Test name clarity
merge nathanlws: Work around isActive() issue in MergeJoinSorter

Merge pull request #948 from nathanlws/sql-layer/merge-join-sorter-input-workaround
https://github.com/FoundationDB/sql-layer/pull/948
Drop to 1.9.0
merge nathanlws: Drop to 1.9.0

Merge pull request #949 from nathanlws/sql-layer/lower-version-number
https://github.com/FoundationDB/sql-layer/pull/949
Suppressions for tests not compatible with random-context
merge nathanlws: Suppressions for more tests under random-context

Merge pull request #950 from nathanlws/sql-layer/misc-suppressions-for-random
https://github.com/FoundationDB/sql-layer/pull/950