Unit tests for charset conversions

Added test cases for:

1. libraries/char*
2. libraries/iconv*
3. libraries/kanji*
Mark test incomplete if runkit is missing
Comment added for test case
Conflict resolve with DBIDummy Class
JSlint fixes
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Merge remote-tracking branch 'origin/master'
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Merge pull request #418 from ayushchd/unit_testing

Unit tests for charset conversions
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Merge remote-tracking branch 'origin/master'
Coding style fixes for new tests
Optional @test annotation for tests
Merge branch 'master' of https://github.com/phpmyadmin/phpmyadmin into UT_transform2
modify the test cases to better ones