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Up to [DVB] / dietlibc / lib

  HP-PA fixes (Micah Anderson, Hubert Poetzl)
  some locale touchups

#include <ctype.h>

int isalnum(int ch) {
  return (unsigned int)((ch | 0x20) - 'a') < 26u  ||
	 (unsigned int)( ch         - '0') < 10u;
}