Add more robust detection of case insensitive string compare

Jan Breuer

2013-10-22 fea06605af79832c6abe7a8e6a24c142987994d6

 examples/common/scpi-def.c

@@ -193,4 +193,5 @@
    .registers = scpi_regs,
    .units = scpi_units_def,
    .special_numbers = scpi_special_numbers_def,
    .idn = {"MANUFACTURE", "INSTR2013", NULL, "01-02"},
};