[Chicken-janitors] #929: chicken-install should rm shared libraries prior to install

[Chicken Trac]

#929: chicken-install should rm shared libraries prior to install
----------------------------+-----------------------------------------------
 Reporter:  zbigniew        |       Owner:  zbigniew
     Type:  defect          |      Status:  new     
 Priority:  minor           |   Milestone:  4.9.0   
Component:  core libraries  |     Version:  4.8.x   
 Keywords:                  |  
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 So that I don't forget about it:

 chicken-installing an extension that is currently in use will generally
 cause a segfault in the running program, because the shared lib changes
 out from under us.  If we rm the shared lib first, the old file is
 disconnected from the filesystem but still available to the program, and
 we can install the new library, which will be picked up once the program
 is restarted.

 Behavior on windows systems is unknown but should not make things worse.

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Ticket URL: <http://bugs.call-cc.org/ticket/929>
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