Added ICMP DLL implementation.

diff --git a/configure b/configure
index 63b7bea..139ff44 100755
--- a/configure
+++ b/configure
@@ -5643,6 +5643,7 @@
 dlls/dciman32/Makefile
 dlls/dplayx/Makefile
 dlls/dsound/Makefile
+dlls/icmp/Makefile
 dlls/imagehlp/Makefile
 dlls/imm32/Makefile
 dlls/lzexpand/Makefile
@@ -5846,6 +5847,7 @@
 dlls/dciman32/Makefile
 dlls/dplayx/Makefile
 dlls/dsound/Makefile
+dlls/icmp/Makefile
 dlls/imagehlp/Makefile
 dlls/imm32/Makefile
 dlls/lzexpand/Makefile