configure: Windows-x64 architecture fixes

* Removed /favor:blend from ARCH_DEP_CPPFLAGS
  It is the default anyway, and including it stops the
  MS Express compilers from building 64-bit executables.
* Added a CONFIG_SITE.Common.windows-x64-static file.
  The MSVS 2010 linker crashes when when generating code
  for this target with HOST_OPT = YES, so make it NO.

configure/os/CONFIG.win32-x86.windows-x64

@@ -10,19 +10,9 @@
 -include $(CONFIG)/os/CONFIG.Common.win32-x86
 -include $(CONFIG)/os/CONFIG.win32-x86.win32-x86
 
-ARCH_DEP_CPPFLAGS += /favor:blend
-#ARCH_DEP_CPPFLAGS += /Wp64
-
-#	/favor:blend	both AMD64 and INTEL64
-#	/favor:AMD64
-#	/favor:INTEL64 (new value)
-#	/favor:EN64T   (old value)
-
 OPT_LDFLAGS += /MACHINE:X64
 
 #	/MACHINE:X64
 #	/MACHINE:IA64  (Itanium)
 #	/MACHINE:X86
 
-#The following option does not work
-#ARCH_DEP_CPPFLAGS += /env x64

configure/os/CONFIG.windows-x64.windows-x64

@@ -9,14 +9,6 @@
 
 -include $(CONFIG)/os/CONFIG.win32-x86.win32-x86
 
-ARCH_DEP_CPPFLAGS += /favor:blend
-#ARCH_DEP_CPPFLAGS += /Wp64
-
-#	/favor:blend	both AMD64 and INTEL64
-#	/favor:AMD64
-#	/favor:INTEL64 (new value)
-#	/favor:EN64T   (old value)
-
 OPT_LDFLAGS += /MACHINE:X64
 
 #	/MACHINE:X64

configure/os/CONFIG_SITE.Common.windows-x64-static

@@ -0,0 +1,11 @@
+# CONFIG_SITE.Common.windows-x64-static
+#
+# $Revision-Id$
+#
+# Site Specific definitions for windows-x64-static target
+# Only the local epics system manager should modify this file
+
+# 64-bit Visual Studio 2010 builds fail when built optimized.
+# If you are using a newer version you can try removing this:
+HOST_OPT = NO
+