Fix two bugs in Oracle Support
New build process

- Switch from phing to ant
- Add composer archive for packages
- Remove PEAR package building
Update composer.json for 2.4 release.
Release 2.4.0
Bump version to 2.4.1
Fixed PRAGMA calls that were missing quotes for non-standard table names.
Merge branch 'DBAL-572' into 2.4
Fixed logic error
Added test with alternative shard chooser
Merge branch 'DDC-613' into 2.4
Release 2.4.1
Bump version to 2.4.2
fix binding LOB values in mysqli driver prepared statement
only store result in mysqli driver prepared statement if a result is definitely available
Merge branch 'DBAL-689' into 2.4
fix dropping primary key with autoincrement column in MySQL
fix test groups
add missing assertions
Fix test
Merge branch 'DDC-464' into 2.4