Make sure that Configure will defined DSO_WIN32 for the Win32 targets. I feel...

Make sure that Configure will defined DSO_WIN32 for the Win32 targets.  I feel a bit unsure if this should really be done for Mingw32 and CygWin32

Configure

@@ -359,24 +359,24 @@ my %table=(
 
 # Windows NT, Microsoft Visual C++ 4.0
 
-"VC-NT","cl:::::BN_LLONG RC4_INDEX ${x86_gcc_opts}:::",
-"VC-WIN32","cl:::::BN_LLONG RC4_INDEX ${x86_gcc_opts}:::",
+"VC-NT","cl:::::BN_LLONG RC4_INDEX ${x86_gcc_opts}::::::::::win32",
+"VC-WIN32","cl:::::BN_LLONG RC4_INDEX ${x86_gcc_opts}::::::::::win32",
 "VC-WIN16","cl:::(unknown)::MD2_CHAR DES_UNROLL DES_PTR RC4_INDEX THIRTY_TWO_BIT:::",
 "VC-W31-16","cl:::(unknown)::BN_LLONG MD2_CHAR DES_UNROLL DES_PTR RC4_INDEX SIXTEEN_BIT:::",
 "VC-W31-32","cl:::::BN_LLONG MD2_CHAR DES_UNROLL DES_PTR RC4_INDEX THIRTY_TWO_BIT:::",
 "VC-MSDOS","cl:::(unknown)::BN_LLONG MD2_CHAR DES_UNROLL DES_PTR RC4_INDEX SIXTEEN_BIT:::",
 
 # Borland C++ 4.5
-"BC-32","bcc32:::::BN_LLONG DES_PTR RC4_INDEX:::",
+"BC-32","bcc32:::::BN_LLONG DES_PTR RC4_INDEX::::::::::win32",
 "BC-16","bcc:::(unknown)::BN_LLONG DES_PTR RC4_INDEX SIXTEEN_BIT:::",
 
 # Mingw32
 # (Note: the real CFLAGS for Windows builds are defined by util/mk1mf.pl
 # and its library files in util/pl/*)
-"Mingw32", "gcc:-DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::::BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:",
+"Mingw32", "gcc:-DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::::BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}::::::::::win32",
 
 # CygWin32
-"CygWin32", "gcc:-DTERMIOS -DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::::BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:",
+"CygWin32", "gcc:-DTERMIOS -DL_ENDIAN -fomit-frame-pointer -O3 -m486 -Wall::::BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}::::::::::win32",
 
 # Ultrix from Bernhard Simon <simon@zid.tuwien.ac.at>
 "ultrix-cc","cc:-std1 -O -Olimit 1000 -DL_ENDIAN::(unknown)::::::",