* source/vm/hvm.c
- Changed byte by byte copy used in PushString to memcpy,
because the side effects of code like szTemp[w++] = szText[w]
is compiler dependent. Borland C++ 3.1 (in C mode) copies byte
0 to byte 0, etc., but IBM Visual Age C++ 3.0 (in C++ mode)
copies byte 1 to byte 0, etc.
Changed all internal _SET_xxx to HB_SET_xxx
Changed HB_SETCENTURY to modify the HB_SET_DATEFORMAT
Changed the name of the set initialization function to InitializeSets
Rewrote hb_dtoc to use hb_set_century and to be Clipper compliant
Added dates2.prg to test century compliance with Clipper
