8520523 - update to 7.16.3

Authored and Committed by jnovy 16 years ago
    - update to 7.16.3
    - drop .print patch, applied upstream
    - next series of merge review fixes by Paul Howarth
    - remove aclocal stuff, no more needed
    - simplify makefile arguments
    - don't reference standard library paths in libcurl.pc
    - include docs/CONTRIBUTE
    
        
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