Updates for NT4 (MSVC5++).

Updates for NT4 (MSVC5++).
Removed external include/library paths from projects.  External paths should
be set via Tools | Options | Directories.  This allows each developer the
freedom to install external libraries where they desire.
Used libdb.lib instead of libdbs.lib to avoid thread conflicts.
Added hs_regex.lib to library input.  We require some form of regex, this
library works (and is relatively easy for the user to install).
Removed a little lint which MCVC5 detected.
Need to sort out single-threaded vs multithreaded library generation.