int r = hw_CompareString(STRPTR s1, STRPTR s2, ULONG flags,
struct hwTagList *tags);
s1 and s2 and returns how the two strings are related.
If s1 is less than s2, -1 is returned. If s1 is greater than s2, 1 is returned,
otherwise, i.e. if the strings are equal, the return value is 0.
The flags parameter can be set to a combination of the following flags:
HWCMPSTR_IGNORECASE:hw_CompareString() will compare the two strings in a case-insensitive
manner.
NULL