Link with exchndl, instead of dynamically loading it.

It caused problems with crash reports not being made if the current working directory gets changed. Not even recommended anymore per the drmingw readme
https://github.com/jrfonseca/drmingw#exchndl

libs/drmingw/include/exchndl.h

+/*
+ * Copyright 2002-2015 Jose Fonseca
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#pragma once
+
+
+#include <windows.h>
+
+
+// Set the unhandled exception handler.
+// Must be called when exchndll.dll is statically loaded (as opposed to loaded
+// dynamically via LoadLibrary)
+EXTERN_C VOID APIENTRY
+ExcHndlInit(void);
+
+
+// Override the report file name.
+//
+// Default is prog_name.RPT, in the same directory as the main executable.
+//
+// You can also pass "-" for stderr.
+EXTERN_C BOOL APIENTRY
+ExcHndlSetLogFileNameA(const char *szLogFileName);

src/sdl/i_main.c

@@ -58,6 +58,10 @@ char  logfilename[1024];
 #endif
 #endif
 
+#if defined (_WIN32)
+#include "exchndl.h"
+#endif
+
 #if defined (_WIN32)
 #include "../win32/win_dbg.h"
 typedef BOOL (WINAPI *p_IsDebuggerPresent)(VOID);
@@ -170,7 +174,7 @@ int main(int argc, char **argv)
 			)
 #endif
 		{
-			LoadLibraryA("exchndl.dll");
+			ExcHndlInit();
 		}
 	}
 #ifndef __MINGW32__

src/win32/Makefile.cfg

@@ -60,6 +60,12 @@ else
 endif
 endif
 
+ifndef MINGW64
+	CPPFLAGS+=-I../libs/drmingw/include
+	LDFLAGS+=-L../libs/drmingw/lib/win32
+	LIBS+=-lmgwhelp -lexchndl
+endif
+
 	# name of the exefile
 ifdef SDL
 	EXENAME?=srb2kart.exe