Implement Expression Language 5.0

[Thihup]

Running the jakarta-api branch with TCK 5.0, we have 8 failing tests:

• [x] com/sun/ts/tests/el/api/jakarta_el/beanelresolver/ELClient.java#beanELResolverDefaultMethodReadOnlyTest_from_standalone
• [ ] com/sun/ts/tests/el/api/jakarta_el/methodexpression/ELClient.java#methodExpressionMatchingAmbiguousTest_from_standalone
• [ ] com/sun/ts/tests/el/api/jakarta_el/methodexpression/ELClient.java#methodExpressionMatchingCoercionBeatsExactVarArgsTest_from_standalone
• [ ] com/sun/ts/tests/el/api/jakarta_el/methodexpression/ELClient.java#methodExpressionMatchingExactPreferredTest_from_standalone
• [ ] com/sun/ts/tests/el/api/jakarta_el/methodexpression/ELClient.java#methodExpressionMatchingOverloadBeatsCoercionTest_from_standalone
• [ ] com/sun/ts/tests/el/api/jakarta_el/methodexpression/ELClient.java#methodExpressionMatchingOverloadBeatsExactVarArgsTest_from_standalone
• [ ] com/sun/ts/tests/el/api/jakarta_el/methodexpression/ELClient.java#methodExpressionMatchingVarArgsTest_from_standalone
• [ ] com/sun/ts/tests/el/api/jakarta_el/methodreference/ELClient.java#methodReferenceTest_from_standalone
• [x] com/sun/ts/tests/el/api/jakarta_el/staticfieldelresolver/ELClient.java#staticFieldELResolverTest_from_standalone
• [x] com/sun/ts/tests/el/spec/coercion/ELClient.java#elCoerceLambdaExpressionToFunctionalInterfaceTest_from_standalone
• [x] com/sun/ts/tests/el/spec/coercion/ELClient.java#elCoerceToArrayTest_from_standalone
• [x] com/sun/ts/tests/el/spec/collectionoperators/ELClient.java#elCollectionListLiteralTest_from_standalone
• [ ] com/sun/ts/tests/el/spec/collectionoperators/ELClient.java#elCollectionMapLiteralTest_from_standalone
• [x] com/sun/ts/tests/signaturetest/el/ELSigTest.java#signatureTest

[tandraschko]

@Thihup any preogress here? i would really like to see a benchmark of your project and EL 5.0 compatibility