Fix problem of not checking if current perspective equals target perspective before prompting to switch perspectives. Also, check if project is Qt Nature and skip if it's a bld.inf import.
bin.includes = book.css,\
debuggerTOC.xml,\
intro/,\
tocCarbide.xml,\
plugin.xml,\
html/
src.includes = tocCarbide.xml,\
plugin.xml,\
intro/,\
html/,\
debuggerTOC.xml,\
book.css