22ec3a0 Remove C89-specific language constructs from configure checks

Authored and Committed by fweimer a year ago
    Remove C89-specific language constructs from configure checks
    
    Fix feature detection for major/minor macros.
    
    Related to:
    
      <https://fedoraproject.org/wiki/Changes/PortingToModernC>
      <https://fedoraproject.org/wiki/Toolchain/PortingToModernC>
    
        
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