Unknown options are fatal, so label them error rather than warning.

git-svn-id: http://lm-sensors.org/svn/i2c-tools/trunk@5206 7894878c-1315-0410-8ee3-d5d059ff63e0

tools/i2cdetect.c

@@ -228,8 +228,8 @@ int main(int argc, char *argv[])
 			last = 0x7F;
 			break;
 		default:
-			fprintf(stderr, "Warning: Unsupported flag "
-				"\"-%c\"!\n", argv[1+flags][1]);
+			fprintf(stderr, "Error: Unsupported option "
+				"\"%s\"!\n", argv[1+flags]);
 			help();
 			exit(1);
 		}

tools/i2cdump.c

@@ -68,8 +68,8 @@ int main(int argc, char *argv[])
 		case 'r': range = argv[1+(++flags)]; break;
 		case 'y': yes = 1; break;
 		default:
-			fprintf(stderr, "Warning: Unsupported flag "
-				"\"-%c\"!\n", argv[1+flags][1]);
+			fprintf(stderr, "Error: Unsupported option "
+				"\"%s\"!\n", argv[1+flags]);
 			help();
 			exit(1);
 		}

tools/i2cget.c

@@ -169,8 +169,8 @@ int main(int argc, char *argv[])
 		case 'f': force = 1; break;
 		case 'y': yes = 1; break;
 		default:
-			fprintf(stderr, "Warning: Unsupported flag "
-				"\"-%c\"!\n", argv[1+flags][1]);
+			fprintf(stderr, "Error: Unsupported option "
+				"\"%s\"!\n", argv[1+flags]);
 			help();
 			exit(1);
 		}

tools/i2cset.c

@@ -63,8 +63,8 @@ int main(int argc, char *argv[])
 		case 'f': force = 1; break;
 		case 'y': yes = 1; break;
 		default:
-			fprintf(stderr, "Warning: Unsupported flag "
-				"\"-%c\"!\n", argv[1+flags][1]);
+			fprintf(stderr, "Error: Unsupported option "
+				"\"%s\"!\n", argv[1+flags]);
 			help();
 			exit(1);
 		}