dpif-linux: Rename dpif-netlink; change to compile with MSVC.

The patch contains the necessary modifications to compile and also to run
under MSVC.

Added the files to the build system and also changed dpif_linux to be under
a more generic name dpif_windows.

Added a TODO under the windows part in case we want to implement another
counterpart for epoll functions.

Signed-off-by: Alin Gabriel Serdean <[email protected]>
Signed-off-by: Ben Pfaff <[email protected]>

PORTING

@@ -232,7 +232,7 @@ requirements are unclear, please report this as a bug.
 There are two existing dpif implementations that may serve as
 useful examples during a port:
 
-    * lib/dpif-linux.c is a Linux-specific dpif implementation that
+    * lib/dpif-netlink.c is a Linux-specific dpif implementation that
       talks to an Open vSwitch-specific kernel module (whose sources
       are in the "datapath" directory).  The kernel module performs
       all of the switching work, passing packets that do not match any

lib/automake.mk

@@ -307,8 +307,8 @@ endif
 
 if LINUX
 lib_libopenvswitch_la_SOURCES += \
-	lib/dpif-linux.c \
-	lib/dpif-linux.h \
+	lib/dpif-netlink.c \
+	lib/dpif-netlink.h \
 	lib/netdev-linux.c \
 	lib/netdev-linux.h \
 	lib/netlink-notifier.c \
@@ -332,6 +332,8 @@ endif
 
 if WIN32
 lib_libopenvswitch_la_SOURCES += \
+	lib/dpif-netlink.c \
+	lib/dpif-netlink.h \
 	lib/netlink-notifier.c \
 	lib/netlink-notifier.h \
 	lib/netlink-protocol.h \