made it compile on gcc linux 64. segfault in preprocess calltrick todo fix

lzma_c/common.h

@@ -17,6 +17,10 @@
 // #define true 1
 // #define false 0
 
+#ifndef __stdcall
+#define __stdcall __attribute__((stdcall))
+#endif
+
 typedef uint8_t byte;
 typedef uint16_t word;
 typedef uint64_t uint64;