Do not use dprintf

dprintf is already claimed by POSIX[1], and on at least one system
is implemented as a macro

[1] http://www.opengroup.org/onlinepubs/9699919799/functions/dprintf.html

Signed-off-by: malc <av1474@comtv.ru>
diff --git a/block-migration.c b/block-migration.c
index 258a88a..230d7ed 100644
--- a/block-migration.c
+++ b/block-migration.c
@@ -33,10 +33,10 @@
 //#define DEBUG_BLK_MIGRATION
 
 #ifdef DEBUG_BLK_MIGRATION
-#define dprintf(fmt, ...) \
+#define DPRINTF(fmt, ...) \
     do { printf("blk_migration: " fmt, ## __VA_ARGS__); } while (0)
 #else
-#define dprintf(fmt, ...) \
+#define DPRINTF(fmt, ...) \
     do { } while (0)
 #endif
 
@@ -332,7 +332,7 @@
 {
     BlkMigBlock *blk;
 
-    dprintf("%s Enter submitted %d read_done %d transferred %d\n",
+    DPRINTF("%s Enter submitted %d read_done %d transferred %d\n",
             __FUNCTION__, block_mig_state.submitted, block_mig_state.read_done,
             block_mig_state.transferred);
 
@@ -355,7 +355,7 @@
         assert(block_mig_state.read_done >= 0);
     }
 
-    dprintf("%s Exit submitted %d read_done %d transferred %d\n", __FUNCTION__,
+    DPRINTF("%s Exit submitted %d read_done %d transferred %d\n", __FUNCTION__,
             block_mig_state.submitted, block_mig_state.read_done,
             block_mig_state.transferred);
 }
@@ -400,7 +400,7 @@
 
 static int block_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
 {
-    dprintf("Enter save live stage %d submitted %d transferred %d\n",
+    DPRINTF("Enter save live stage %d submitted %d transferred %d\n",
             stage, block_mig_state.submitted, block_mig_state.transferred);
 
     if (stage < 0) {