535879: [performance] Loading a large tasklist.xml takes a long time

Changed the order the tasks are added to the task list to prevent
unnecessary removals from UnmatchedTaskContainer when loading
tasklist.xml.

Change-Id: I1931578f3c9cdd3e47fc5f2324577ec83874fc27
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=535879
Signed-off-by: alexei.trebounskikh <alexei.trebounskikh@tasktop.com>
(cherry picked from commit 3e12a215f3e68d8cf11ccf84196afb42178f2cfa)
3 files changed