Remove Unixware and openserver support

cde/programs/dtmail/libDtMail/Common/Buffer.C

@@ -46,13 +46,6 @@
 #include <string.h>
 #ifdef __osf__
 #include <stdlib.h>
-#else
-#if defined(USL) && (OSMAJORVERSION == 2)
-extern "C" {
-#endif
-#if defined(USL) && (OSMAJORVERSION == 2)
-};
-#endif
 #endif // __osf__
 #include <stdio.h>
 #include <stdlib.h>

cde/programs/dtmail/libDtMail/Common/DtMailRc.C

@@ -152,7 +152,7 @@ struct cmd cmdtab[] = {
 #define SYSTEM_MAILRC	"/etc/mail/mail.rc"
 #elif defined(_AIX) || defined(__osf__) || defined(linux)
 #define SYSTEM_MAILRC	"/usr/share/lib/Mail.rc"
-#elif defined(USL) || defined(__hpux)
+#elif defined(__hpux)
 #define SYSTEM_MAILRC	"/usr/share/lib/mailx.rc"
 #elif defined(CSRG_BASED)
 #define SYSTEM_MAILRC	"/etc/mail.rc"

cde/programs/dtmail/libDtMail/Common/DtMailServer.C

@@ -160,7 +160,7 @@ DtMailServer::set_password(char *password)
 //
 //	len	- Length of message.
 //
-#if defined(reallyoldsun) || defined(USL)
+#if defined(reallyoldsun)
 #define SA_HANDLER_TYPE void (*)(void)
 #else
 #define SA_HANDLER_TYPE void (*)(int)

cde/programs/dtmail/libDtMail/Common/Process.C

@@ -51,7 +51,7 @@
 /*
 ** file included for INFTIM
 */ 
-#if defined(SunOS) || defined(USL)
+#if defined(SunOS)
 #include <stropts.h>
 #elif defined(HPUX)
 #include <sys/poll.h>

cde/programs/dtmail/libDtMail/Common/Session.C

@@ -86,12 +86,6 @@
 
 #include <stdlib.h>
 #include <unistd.h>
-#if defined(USL) && (OSMAJORVERSION == 2)
-extern "C" {
-#endif
-#if defined(USL) && (OSMAJORVERSION == 2)
-};
-#endif
 #include <string.h>
 #include <pwd.h>
 #include <sys/socket.h>