c4a389 dry run: initial quick implementation.

Authored and Committed by midipix 8 years ago
    dry run: initial quick implementation.
    
    With the current patch, slibtool respects --dry-run by turning the
    various modes (compile, link, install, execute) into no-ops. For at
    least the compile and install mode, it should be possible to output
    complete information about the steps that would be performed under
    default operation conditions, however that is not yet implemented.
    
        
file modified
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