#511. Fixed C compilation errors for the latest versions of Mac OS X

src/crf_context.c

@@ -1,4 +1,5 @@
 #include "crf_context.h"
+#include "float_utils.h"
 
 crf_context_t *crf_context_new(int flag, size_t L, size_t T) {
     crf_context_t *context = malloc(sizeof(crf_context_t));

src/language_classifier_test.c

@@ -7,6 +7,7 @@
 #include "language_classifier_io.h"
 #include "string_utils.h"
 #include "trie_utils.h"
+#include "transliterate.h"
 
 
 double test_accuracy(char *filename) {

src/shuffle.c

@@ -4,6 +4,8 @@
 
 #include "string_utils.h"
 
+#include "file_utils.h"
+
 // Run shuf/gshuf on a file in-place if the shuf command is available.
 bool shuffle_file(char *filename) {
     char *shuffle_command = NULL;