Various fixes for Turbo C++

Mostly they seem to be using unsigned long rather than DWORD for Win32 API
calls.

src/conio/win32cio.c

@@ -517,7 +517,7 @@ void win32_resume(void)
 		SetConsoleMode(h, conmode);
 }
 
-static BOOL WINAPI ControlHandler(DWORD CtrlType)
+static BOOL WINAPI ControlHandler(unsigned long CtrlType)
 {
 	return TRUE;
 }

src/sbbs3/jsexec.c

@@ -844,7 +844,7 @@ void recycle_handler(int type)
 
 
 #if defined(_WIN32)
-BOOL WINAPI ControlHandler(DWORD CtrlType)
+BOOL WINAPI ControlHandler(unsigned long CtrlType)
 {
 	break_handler((int)CtrlType);
 	return TRUE;

src/sbbs3/sbbscon.c

@@ -1044,7 +1044,7 @@ void cleanup(void)
 }
 
 #if defined(_WIN32)
-BOOL WINAPI ControlHandler(DWORD CtrlType)
+BOOL WINAPI ControlHandler(unsigned long CtrlType)
 {
 	terminated=TRUE;
 	return TRUE;

src/sbbs3/sexyz.c

@@ -227,7 +227,7 @@ void break_handler(int type)
 }
 
 #if defined(_WIN32)
-BOOL WINAPI ControlHandler(DWORD CtrlType)
+BOOL WINAPI ControlHandler(unsigned long CtrlType)
 {
 	break_handler((int)CtrlType);
 	return TRUE;

src/sbbs3/xtrn.cpp

@@ -385,13 +385,13 @@ int sbbs_t::external(const char* cmdline, long mode, const char* startup_dir)
 	HANDLE	wrinpipe;
     PROCESS_INFORMATION process_info;
 	DWORD	hVM;
-	DWORD	rd;
+	unsigned long	rd;
     DWORD	wr;
-    DWORD	len;
+    unsigned long	len;
     DWORD	avail;
-	DWORD	dummy;
-	DWORD	msglen;
-	DWORD	retval;
+	unsigned long	dummy;
+	unsigned long	msglen;
+	unsigned long	retval;
 	DWORD	last_error;
 	DWORD	loop_since_io=0;
 	struct	tm tm;
@@ -877,7 +877,7 @@ int sbbs_t::external(const char* cmdline, long mode, const char* startup_dir)
             		len=avail;
 
 				while(rd<len) {
-					DWORD waiting=0;
+					unsigned long waiting=0;
 
 					if(use_pipes)
 						PeekNamedPipe(