[TAP] Upgrade STIL version + Specify charset encoding for Javadoc generation in all Ant build scripts.

[UWS,TAP] Fix bug about UPLOAD: file upload (multipart/form-data) with a POST to the SetJobParam action was not possible & bug in the COS library about line termintation (it should be CRLF but some clients end lines with LF and that should have been managed by the COS lib but wasn't ; correction applied by myself but feedback from the lib developer is waited).

[TAP] Replace Savot by STIL + Change datatype management in TAPColumn (vot-type is no more available from here), TAPType (no votable type inside it) and VotType (can now be created from a TAPType instance + a VotType instance can be converted easily in a TAPType object)