Added the following capabilities to OpenDS:
- Index rebuilding capabilities. All indexes including system and attribute indexes can 
be rebuilt. Each index will be rebuilt by a seperate thread to increase performance. A 
max number of rebuild threads could be set to limit the resources used by large rebuild 
jobs. Partial rebuilds of attribute indexes could also be done by specifying the 
attribute index type after the attribute type (ie. sn.approximate).
- Index rebuilding standalone tool. Rebuilding of attribute indexes could be done with 
the backend online. However, rebuilds including system indexes must be done with the 
backend offline.
- Index rebuilding task. Rebuilding of attribute indexes are done with the backend 
online. Rebuilds that include system indexes will be performed after bring the backend 
offline. The user must have index-rebuild privilages to rebuild indexes.
- Approxitae indexing capability. The value of the attribute will be normalized using 
the approximate maching rule of that attribute type. This is used as the key for the 
index. Approximate indexes are fully supported by the index verify, rebuild, and import 
jobs.
- Fixed bug in build.xml where weave is enabled even if a test.* property is set.
- Consolidated some common tool messages.
- Consolidated some JE backend methods common to all tools.
- Added unit tests for rebuild job and approximate indexes.

Fix for issues 35, 39, 40, 41