Move the Matrox Millennium II and G100 to the Dev branch

src/win/Makefile.mingw

@@ -64,6 +64,9 @@ ifeq ($(DEV_BUILD), y)
  ifndef LASERXT
   LASERXT := y
  endif
+ ifndef MGA2
+  MGA2 := y
+ endif
  ifndef OLIVETTI
   OLIVETTI := y
  endif
@@ -125,6 +128,9 @@ else
  ifndef LASERXT
   LASERXT := n
  endif
+ ifndef MGA2
+  MGA2 := n
+ endif
  ifndef OLIVETTI
   OLIVETTI := n
  endif
@@ -490,6 +496,10 @@ ifeq ($(DEV_BRANCH), y)
   DEVBROBJ += m_xt_laserxt.o
  endif
 
+ ifeq ($(MGA2), y)
+  OPTS += -DUSE_MGA2
+ endif
+
  ifeq ($(OPEN_AT), y)
   OPTS += -DUSE_OPEN_AT
  endif