[jdt-core-dev] Test/Fix pass 2

[Philippe_Mulet@xxxxxxx]

During the ongoing testpass, we have currently the following defects to be
worth fixing before freeze-3.
Our goal is to have less than 20 fixes issued during this iteration.

18584 New 2.0 APIs marked as deprecated should be removed
18698 Seeing non-java projects in package view
18920 NPE searching for references to a message
18749 Missing java doc for IConstantPoolEntry
18583 New constants not tagged with @since 2.0
18708 DOM AST - IllegalArgumentException organizing imports
18039 Opening .class file fails
18621 Query all types when project is closed prevents reindexing when
project is open