submit/trunk/20130123.140026

[Version] 0.3.70
[Project] GT-I8800
[Title] Release wrt-plugins-common_0.3.70
[Issue#] N/A
[Problem] Plugin support policy.
[Cause] N/A
[Solution] For tizen app type, all plugin object loading is allowed.
[Issue#] N/A
[Feature] Add widgetdb dao tests back to wrt-plugins-commons.
          Build tests conditionally.
[Problem] N/A
[Cause] Unit tests should reside in the same repositories the code they test.
            Tests should be built only on explicit request.
[Solution] Add widgetdb dao tests to wrt-commons repository.
               Build tests only when option WITH_TESTS is set.
[SCMRequest] gbs >= 0.12
[Veryfication] Build repository and run plugins-tests-widgetdb