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http://www.opengroup.org/onlinepubs/009695399/functions/swab.html the prototype for swab() should be in <unistd.h> and not in <string.h>. Move it, and update to match SUS. Leave the prototype in string.h for now, for backwards compat. PR: 74751 Submitted by: Craig Rodrigues <rodrigc@crodrigues.org> Discussed with: das