Documentation updated, and tests added to t/op/string.t. The CVS log details most of the changes, but basically:
core.ops - Added ord() opcode string.c - Added string_ord() and a _string_index() helper function to help making accommodating different encodings easier. Patched concat() to deal with null strings. t/op/string.t - Added tests for ord() opcode, added a few null tests for concat(). At a suggestion from Alex Gough, the three-argument ord opcode now behaves like perl's arrays when given negative indices. Read the opcode documentation for more information. --Jeff <[EMAIL PROTECTED]>
