[Chicken-janitors] #40: merge trunk changes after r14940 into prerelease branch

[Chicken Trac]

#40: merge trunk changes after r14940 into prerelease branch
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 Reporter:  felix           |       Owner:  felix   
     Type:  task            |      Status:  new     
 Priority:  major           |   Milestone:          
Component:  core libraries  |     Version:  4.1.0rc1
 Keywords:                  |  
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Ticket URL: <http://www.irp.oist.jp/trac/chicken/ticket/40>
Chicken Scheme <http://www.call-with-current-continuation.org/>
Chicken Scheme is a compiler for the Scheme programming language.