<os:Repeat>, <os:If> and special var precedence support + unit tests; Optimized My; @context -> @cur

- JSTemplate brought in as a copy, modified to allow proper functioning of @cur
- @cur needs to be explicitly passed to custom tags
- Cur -> My -> Top precedence
- Tag-based control structures
- unit tests

[Evan Gilbert (code review), 2009-04-01 20:20:14]

http://codereview.appspot.com/32041/diff/1/7
File
features/src/main/javascript/features/opensocial-templates/jsTemplate/jsevalcontext.js
(right):

http://codereview.appspot.com/32041/diff/1/7#newcode1
Line 1: // Copyright 2006 Google Inc.
Need standard Apache headers here, plus standard Apache coding style.

Is it possible to include this as a Maven dependency? Not sure what we're
modifying, but possibly we can monkey-patch in the different functions.

http://codereview.appspot.com/32041/diff/1/6
File
features/src/main/javascript/features/opensocial-templates/jsTemplate/jstemplate.js
(right):

http://codereview.appspot.com/32041/diff/1/6#newcode1
Line 1: // Copyright 2006 Google Inc.
Need standard apache headers, etc.

http://codereview.appspot.com/32041/diff/1/8
File
features/src/main/javascript/features/opensocial-templates/jsTemplate/util.js
(right):

http://codereview.appspot.com/32041/diff/1/8#newcode1
Line 1: // Copyright 2006 Google Inc.
Standard apache headers, etc.

http://codereview.appspot.com/32041/diff/1/2
File features/src/test/javascript/features/opensocial-templates/template_test.js
(right):

http://codereview.appspot.com/32041/diff/1/2#newcode484
Line 484: tryTemplateContent('<div><span
repeat="My.Word"><os:renderAll/></span></div>');
Should we switch these to <os:Render>?

http://codereview.appspot.com/32041/diff/1/2#newcode746
Line 746: tryTemplateContent('<os:msg Value="Wrong" cur="${Top}"/>', { Value:
'Right' } );
Do we want to change these to reflect cur not propagating downward? This can be
a followup issue, as it was a recent change.