Additional patch for "Can't execute ..."

Additional patch for "Can't execute ..."

The patch I sent a couple of hours ago was not enough.  In fact
delimcpy() was used wrongly when splitting PATH on dosish systems: '\\'
is not quoting ';' in PATH.

Fortunately, delimcpy() is used in very few places in the source, and
never with ';' as delimiter - outside of PATH context.  So we just fix
delimcpy() when the delimiter is ';'.

Enjoy,

p5p-msgid: 199707181120.HAA03593@monk.mps.ohio-state.edu
private-msgid: 199707191651.MAA04897@monk.mps.ohio-state.edu