Before, the scripts relied unfortunately on the compilation performed by
Eclipse. Now, all the JUnit test cases are compiled all the time before
performing the JUnit validation (i.e. ANT task named `junitValidation`).

This is very useful when getting a stack trace of an exception: without
this option, no method and line information can be provided...so, without
this option, the stack trace becomes pretty useless.
(NOTE: this option increases a little the size of the compiled classes)

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

[ALL] Update ANT build scripts to test all existings JUnit tests before compiling. In case of error, the compilation does not complete.

[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: Execute all JUnit tests before building the TAP library. At any JUnit failure, the build is canceled
+ Update the version number for the generated JARs.