gthr-win32.h: Include errno.h to get a declaration for EINVAL and _mingw.h if...

* gthr-win32.h: Include errno.h to get a declaration for
EINVAL and _mingw.h if the target is mingw32.

From-SVN: r39187

gcc/ChangeLog

+2001-01-22  Thomas Pfaff  <tpfaff@gmx.net>
+
+	* gthr-win32.h: Include errno.h to get a declaration for
+	EINVAL and _mingw.h if the target is mingw32.
+
 2001-01-22  Andres Felipe Vargas <avargas@teletulua.com.co>
 
 	* cpp.texi: Correct typos.

gcc/gthr-win32.h

@@ -65,6 +65,10 @@ Boston, MA 02111-1307, USA.  */
 #define __GTHREADS 1
 
 #include <windows.h>
+#include <errno.h>
+#ifdef __MINGW32__
+#include <_mingw.h>
+#endif
 
 #ifdef _LIBOBJC