Add a bunch of new/tested stuff and various small changes 16

Tested Mainboards:
OK:
 - Acer V75-M (used in IBM Aptiva 2170-G
   http://www.flashrom.org/pipermail/flashrom/2012-December/010300.html
 - ASRock 4CoreDual-VSTA with W39V040FB
   http://paste.flashrom.org/view.php?id=1446
 - ASRock 775Dual-VSTA
   http://www.flashrom.org/pipermail/flashrom/2012-December/010294.html
 - ASRock E350M1/USB3
   http://paste.flashrom.org/view.php?id=1465
 - ASUS P5B-VM
   http://www.flashrom.org/pipermail/flashrom/2012-December/010351.html
 - ASUS SABERTOOTH 990FX R2.0
   http://www.flashrom.org/pipermail/flashrom/2012-December/010210.html
 - Elitegroup A928 (including a laptop whitelist board enable)
   http://www.flashrom.org/pipermail/flashrom/2012-November/010119.html
 - EVGA 122-CK-NF68
   Reported by Stephanie Daugherty on IRC
   http://paste.flashrom.org/view.php?id=1431
 - GIGABYTE GA-A75M-UD2H
   Reported by Soul_keeper on IRC
   http://paste.flashrom.org/view.php?id=1490
 - Intel D945GCNL
   Add board enable to override laptop detection too.
   http://www.flashrom.org/pipermail/flashrom/2012-December/010276.html
 - MSI G33M (MS-7357)
   http://www.flashrom.org/pipermail/flashrom/2012-October/010056.html
 - Shuttle FB61
   http://www.flashrom.org/pipermail/flashrom/2012-November/010105.html
 - Tyan S4882 (Thunder K8QS Pro)
   Reported on IRC
NOT OK:
   Alienware Aurora-R2
   http://www.flashrom.org/pipermail/flashrom/2012-December/010225.html
   Biostar H61MU3
   http://www.flashrom.org/pipermail/flashrom/2012-November/010144.html
   Dell OptiPlex 7010
   http://paste.flashrom.org/view.php?id=1481
   Intel DH67CL
   http://www.flashrom.org/pipermail/flashrom/2012-November/010112.html
   Supermicro X9DRT-HF+
   http://www.flashrom.org/pipermail/flashrom/2012-November/010155.html
   Supermicro X9DRW
   http://www.flashrom.org/pipermail/flashrom/2012-November/010150.html

Tested flash chips:
 - Atmel AT25FS010 to PREW (+PREW)
   http://paste.flashrom.org/view.php?id=1484
 - Eon EN25F64 to PREW (+EW)
   http://www.flashrom.org/pipermail/flashrom/2012-December/010210.html
 - Spansion S25FL032A/P to PREW (+EW)
   http://paste.flashrom.org/view.php?id=1510
 - ST M29F002T/NT to PREW (+PREW)
   http://www.flashrom.org/pipermail/flashrom/2012-December/010300.html
 - Winbond W25X10 to PREW (+PREW)
   http://paste.flashrom.org/view.php?id=1486

Tested chipsets:
 - NVIDIA MCP78S http://www.flashrom.org/pipermail/flashrom/2012-November/010176.html
 - SiS 650 http://www.flashrom.org/pipermail/flashrom/2012-November/010119.html

Miscellaneous:
- Typo in GA-X58A-UDR3 (correct is GA-X58A-UD3R).
- Force 2-digit hex numbers in prints were it makes sense.
- Share code between enable_flash_sis530() and enable_flash_sis540().
- Some SST 25 series chips support both WRSR enable commands...
- S25FL032A and S25FL064A share the IDs with their P versions, so rename them.
- Fix a few memleaks in serprog.
- Dediprog uses UINT_MAX so include limits.h (fixes the Windows build of dediprog)
- Add (another) hint regarding the mandatory -p parameter to the manpage
  to make Debian bug #690478 happy.
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=690478
- Fix whitespace issues.
- On shutdown, reset count of registered programmers (by Nico Huber)
- Fix atahpt.c shutdown.
  The order of pcidev_init, register_shutdown and rpci_write_* is important!
  Thanks to Roy for reporting the problem and testing the fix.

Corresponding to flashrom svn r1640.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/flashrom.c b/flashrom.c
index fd438bb..d89860a 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -397,7 +397,10 @@
 		int i = --shutdown_fn_count;
 		ret |= shutdown_fn[i].func(shutdown_fn[i].data);
 	}
+
 	programmer_param = NULL;
+	registered_programmer_count = 0;
+
 	return ret;
 }