909b5ec43c
Since style_class and pseudo_class are space-separated lists of names, add new methods to add and remove individual names rather than just re-setting the entire name. Update existing code to use the new pseudo-class methods where appropriate. In some cases, this may result in actors having multiple pseudoclasses where previously they only had one at a time, but there don't seem to be any visible differences. (There are some places that could usefully use the new style_class methods as well, but this patch doesn't change them.) Also, update test-theme.c to test the new methods. https://bugzilla.gnome.org/show_bug.cgi?id=604943
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