Support for overriding machine hard drive(s)

disks/pc/os2/misc/football/87058/README.md

@@ -6,11 +6,11 @@ machines:
   - id: deskpro386
     type: pc
     debugger: true
-    config: /devices/pc/machine/compaq/deskpro386/ega/4096kb/machine.xml
     autoMount:
       A:
         path: /disks/pc/os2/misc/football/FOOTBALL-76817.json
     messages: warn
+    config: /devices/pc/machine/compaq/deskpro386/ega/4096kb/machine.xml
 ---
 
 OS/2 FOOTBALL Boot Disk (v7.68.17)

disks/pc/windows/win95/4.00.950/README.md

@@ -6,7 +6,10 @@ machines:
   - type: pc
     id: deskpro386
     debugger: true
+    state: deskpro386.json
     config: /devices/pc/machine/compaq/deskpro386/vga/4096kb/machine.xml
+    drives: '[{name:"68Mb Hard Disk",type:4,path:"http://archive.pcjs.org/disks/pc/fixed/68mb/win95.json"}]'
+    autoMount: ''
 ---
 
 Microsoft Windows 95 (First Retail Release)