submit/trunk/20130409.065538

[Version] 1.6
[Project] GT-I8800
[Title] Release livebox.web-provider-1.6
[Issue#] WEB-2905
[Problem] If value of 'box' scheme key has '&' character, the value is parsed partially.
[Cause] 'box' scheme uses '&' character as seperator of key/value.
        '&' character can be also used by value. So other character is needed as 'box' scheme seperator for avoiding conlict.
[Solution] BoxSchemeHandler use '@' character as seperator
[Issue#] N/A
[Problem] When user swipes touchable LB horizontally, current page of Viewer is moved to other one.
[Cause] There is no way to stop page moving in case that the touchable LB wants Viewer page not to be moved to other one.
[Solution] web-provider provides specific Web API for this, so that web contents can request holding page moving at the proper timing.
[Issue#] N/A
[Problem] Sometimes existing resources regarding buffer is not released on resizing Box
[Cause] when ecore_evas_resize function is called,
        sometimes the function doesn't call specific callback regarding freeing resources that is registed by web-provider
[Solution] Beforing allocating new buffer on resizing Box,
           web-provider lets existing buffer be released explicitly if it has been not released yet.