Updated ROM BIOS handling to use the external loader.

Several cleanups and fixes here and there.
Updated (Windows) UI to properly handle resets and changes in Settings.
Updated to no longer scan for roms at startup.

src/win/Makefile.mingw

@@ -8,7 +8,7 @@
 #
 #		Makefile for Windows systems using the MinGW32 environment.
 #
-# Version:	@(#)Makefile.mingw	1.0.5	2018/02/25
+# Version:	@(#)Makefile.mingw	1.0.6	2018/03/02
 #
 # Author:	Fred N. van Kempen, <decwiz@yahoo.com>
 #
@@ -234,7 +234,7 @@ else
  endif
  WINDRES	:= windres
 
- SYSINC		:=
+ SYSINC		:= -Iwin/mingw/include
  SYSLIB		:=
 endif
 
@@ -437,7 +437,8 @@ CXXFLAGS	:= $(WX_FLAGS) $(OPTS) $(DFLAGS) $(COPTIM) $(AOPTIM) \
 #########################################################################
 MAINOBJ		:= pc.o config.o random.o timer.o io.o dma.o nmi.o pic.o \
 		   pit.o ppi.o pci.o mca.o mcr.o mem.o memregs.o rom.o \
-		   device.o nvr.o nvr_at.o nvr_ps2.o $(VNCOBJ) $(RDPOBJ)
+		   rom_load.o device.o nvr.o nvr_at.o nvr_ps2.o \
+		   $(VNCOBJ) $(RDPOBJ)
 
 INTELOBJ	:= intel.o \
 		    intel_flash.o \