Logic fix for multiquality issues.
Set version to 0.26.2-alpha-4
[WIP] Make FieldNames.h/cpp readable.
Remove unused protocol fields

Conflicts:
	src/ripple/module/data/protocol/SerializeDeclarations.h

Remove unused header.
[WIP] Eliminate 'memory leak' from getField
[WIP] testing for a travis test failure.
[WIP] another travis test
[WIP] Make all SFields const
[WIP] Another travis test.
Is testSerialization the reason ~SField needs to be non-trivial?
[WIP] Convert testSerialization to use SField::getField
[WIP] This is very close the final product.
Subsequent commits will squash the [WIP]'s.
[WIP] Comment out unused SField constants.