Merge pull request #250 from pwpiwi/fix_mfkey

fix mfkey tools (issue #247)

diff --cc tools/mfkey/Makefile
index ab1623a87ccff9f3a0dda875cc8c44aef2809182,1744e35a2763a7032dee232cd0a4c40891d26b38..fc6170e4e3f4223437a50e43e8f9933576bcda9f
--- 1/tools/mfkey/Makefile
--- 2/tools/mfkey/Makefile
+++ b/tools/mfkey/Makefile
@@@ -1,10 -1,10 +1,10 @@@
 -VPATH = ../../common/crapto1 ../../client
 +VPATH = ../../common ../../common/crapto1 ../../client
  CC = gcc
  LD = gcc
- CFLAGS = -I../../common -I../../client -Wall -O4
+ CFLAGS = -std=c99 -D_ISOC99_SOURCE -I../../common -I../../client -Wall -O3
  LDFLAGS =
  
 -OBJS = crypto1.o crapto1.o util.o mfkey.o
 +OBJS = crypto1.o crapto1.o parity.o util.o mfkey.o
  EXES = mfkey32 mfkey64
  WINEXES = $(patsubst %, %.exe, $(EXES))