* Added Hint for index creation
* Added tests for proper hint passing
* Added tests
* Added failed link deletion test
* Fixed mmfiles not deleting failed index
* Fixed cluster run
* Added sync
* Enable IPO (LTO) via CMake
* Use separate IPO_ENABLED variable
* Enabled IPO for more binaries
* Enabled IPO for arangobackup
* Suppress an MSVC warning (though it is not unjustified...)
* Fix static builds, broken due to Policy CMP0060 introduced in cmake 3.3
* Removed policies superseded by minimum cmake version
* Disable IPO with google tests due to a g++ bug
* Disable IPO with google tests only on AUTO
* Disable warning for correct line
* Begin de-inlining Aql
* de-inlining Aql: 2nd batch
* de-inlining Aql: 3rd batch
* de-inlining Aql: 4th batch
* Moved code out of ifdef
* Enabled IPO for additional libs
* Fixed some problems found with IPO enabled
- Fixed ODR violation in Pregel
- Removed unused code in ClusterMethods
- Avoid possible uninitialized variable usage
* Set IPO globally, except for 3rdParty libs
* De-inlined AstHelper again (was undone due to a previous merge conflict)
* Added missing .cpp file
* Fixed compilation with MSVC
* Removed superfluous includes from deinlined AQL header files
* Added includes for size_t
* Deleted outdated files
* De-inlined files that were undone during the merge
* Removed includes from files that were undone during merge
* Fixed merge conflicts
* Made usage of named variables for targets a little more consistent
* Bumped minimum cmake version
- removed policies superseded by minimum cmake version
- fixed static linking due to new policy CMP0060
* Fixed library suffixes for windows
* Extracted libs arango_mmfiles and _rocksdb from arangoserver
* Replaced target variables by constants
* Extracted arango_cluster_engine from arangoserver
* Extracted llhttp from arangoserver
* First successful split of arangoserver
* Moved enterprise files to enterprise
* Again only optionally include RestTestHandler and AcceptorUnixDomain
* Cleaned source files from other libraries
* Removed old commented sources
* Split off a small third library
* Fixed boost dependency for cluster engine
* Added some missing dependencies
* Added arango_geo dep, and -J on windows
* Began to split off an arango_graph lib
* Moved more files to arango_graph
* Do not set /J globally for ATL
* Moved more files to arango_graph
* Moved graph-RestHandlers to arango_graph
* Added arango_geo dependency to _mmfiles and _rocksdb
* Updated graph dependencies
* Split off arango_pregel
* Split off arango_aql
* Added missing boost_system dependency to pregel
* Split off arango_vocbase
* Cleanup
* Added missing boost_system dependency for arango_vocbase
* Split off arango_v8server
* Split off arango_utils
* Minor cleanup
* Split of arango_storage_engine
* Split off arango_indexes and arango_cache
* Fixed some dependencies
* Split off arango_replication
* Resolved two todos
* Split off arango_agency
* Reordered some statements
* Ordered dependency definitions alphabetically
* Cleaned some deps
* Break one cycle, comment on another
* Merge the remaining arangoserver_part[123] sources
* Moved some utils to vocbase to break cycles
* Added missing backtrace dependency to iresearch-s
* Added missing boost dependency
* Added dependency arango_indexes -> arango_geo
* Added deps to arango_cluster_engine, cleaned duplicate deps
* Broke remaining dependency cycles
* Actually, missed one cycle...
* Re-added include for Mac
* arango_cache needs SharedPRNG
* Fixed ViewExecutionNode retrieval with deleted documents present in view
* Ported solution from 3.4 branch
* Changed index store in collection from vector to set. To make reversable indexes always last to execute
* Fixed re-enter hung
* Index storage fix
* Made index order deterministic
* Fix Mac build
* Added tests for index reversal
* Fixed Mac build
* Code cleanup
* Some cleanup
* Removed some redundand copy constructor calls
* Applied review comments
* Applied review comments
* make TTL indexes behave like other indexes on creation
if a TTL index is already present on a collection, the previous behavior
was to make subsequent calls to `ensureIndex` fail unconditionally with
the error "there can only be one ttl index per collection".
now, we are comparing the attributes of the to-be-created index with the
attributes of the existing TTL index and make it only fail when the
attributes differ. if the attributes are identical, the `ensureIndex`
call succeeds and returns the existing index.