1. Add DPC protocol and DpcLib library in MdeModulePkg.

2. Add DpcDxe module and DxeDpcLib module in MdeModulePkg
3. Port network stack module to use DPC.
4. Use MIN, and MAX defined in MdePkg to replace NET_MIN and NET_MAX.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4307 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf

@@ -25,6 +25,7 @@
   EDK_RELEASE_VERSION            = 0x00020000
   EFI_SPECIFICATION_VERSION      = 0x00020000
 
+  CONSTRUCTOR                    = NetLibConstructor
 
 #
 # The following information is for reference only and not required by the build tools.
@@ -43,7 +44,6 @@
 
 
 [LibraryClasses]
-   NetLib
    BaseLib
    DebugLib
    BaseMemoryLib
@@ -55,3 +55,4 @@
 [Protocols]
   gEfiSimpleNetworkProtocolGuid                 # PROTOCOL ALWAYS_CONSUMED
   gEfiNicIp4ConfigProtocolGuid                  # PROTOCOL ALWAYS_CONSUMED
+  gEfiDpcProtocolGuid                           # PROTOCOL ALWAYS_CONSUMED