fix(ci): don't enrage the CI Gods by calling a file 'core.*'

src/mpack/conv.h

@@ -1,7 +1,7 @@
 #ifndef MPACK_CONV_H
 #define MPACK_CONV_H
 
-#include "core.h"
+#include "mpack_core.h"
 
 #if ULLONG_MAX == 0xffffffffffffffff
 typedef long long mpack_sintmax_t;

src/mpack/mpack_core.c

@@ -1,6 +1,6 @@
 #include <string.h>
 
-#include "core.h"
+#include "mpack_core.h"
 
 #define UNUSED(p) (void)p;
 #define ADVANCE(buf, buflen) ((*buflen)--, (unsigned char)*((*buf)++))

src/mpack/object.h

@@ -1,7 +1,7 @@
 #ifndef MPACK_OBJECT_H
 #define MPACK_OBJECT_H
 
-#include "core.h"
+#include "mpack_core.h"
 #include "conv.h"
 
 #ifndef MPACK_MAX_OBJECT_DEPTH

src/mpack/rpc.h

@@ -1,7 +1,7 @@
 #ifndef MPACK_RPC_H
 #define MPACK_RPC_H
 
-#include "core.h"
+#include "mpack_core.h"
 #include "object.h"
 
 #ifndef MPACK_RPC_MAX_REQUESTS