Fix#10568 - Animation does not work for inline elements while showing them

Solves the animation issue mentioned in http://bugs.jquery.com/ticket/10568

Issue: We make inline elements to inline-block before animations but in this case, since display was none, inline elements were not able to get convert to inline-block and hence animation was not working as shown in the jsfiddle in above issue.

Issue can also be seen at: http://jsbin.com/izuyat/1/edit
Click on show span and hide span and notice the difference.

PS: I am sorry for the clumsiness I have done for a small PR. Please excuse considering first PR ;)