[454797] [xbase] CompilationTestHelper.compile with several inputs

https://bugs.eclipse.org/bugs/show_bug.cgi?id=454797

Change-Id: I1a592c5bdf629c59206b6438eaf0b56e743ccbfd
Signed-off-by: Lorenzo Bettini <lorenzo.bettini@gmail.com>
Merge "[454797] [xbase] CompilationTestHelper.compile with several inputs"
[454779] sync m2e classes with maven classes
Fix hover since there is an incompatible change in the signature of JavadocContentAccess2.getHTMLContent since Mars
Due to that situation we need to use reflection here.
Merge "Fix hover since there is an incompatible change in the signature of JavadocContentAccess2.getHTMLContent since Mars Due to that situation we need to use reflection here."