g2, c2cpel, and cpeldump: scale to 8M event log files

Change-Id: I7d7748c9c44132d033a9aff1687112ffcb44c460
Signed-off-by: Dave Barach <dbarach@cisco.com>
diff --git a/src/tools/g2/main.c b/src/tools/g2/main.c
index a782e17..1ec7983 100644
--- a/src/tools/g2/main.c
+++ b/src/tools/g2/main.c
@@ -21,6 +21,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
+#include <vppinfra/mem.h>
 
 /*
  * globals
@@ -62,6 +63,8 @@
     int curarg=1;
     char *homedir;
     
+    clib_mem_init (0, ((uword)3<<30));
+
     gtk_init(&argc, &argv);
 
     homedir = getenv ("HOME");