build: Implement build target optimised for jQuery

Change-Id: I799d7cc1079323a3355629dfb56fee1129274998
test: Various clean up

* Move unit tests to the unit/ directory.
* Remove "oo." file prefix (matching the src directory).
* Remove redundant comments.
* Drop "OO." prefix from QUnit module names, so that the
  test module names match the logical build components of the
  library itself.

Change-Id: I9230ba0cd8f4efadb4acb6fd844878627c279224