Print crash log to Android logcat

src/os/unix/unix.cpp

@@ -64,6 +64,10 @@ ULONG __stack = (1024*1024)*2; // maybe not that much is needed actually ;)
 	#endif
 #endif
 
+#ifdef __ANDROID__
+	#include "android/log.h"
+#endif
+
 #include "../../safeguards.h"
 
 bool FiosIsRoot(const char *path)
@@ -243,6 +247,9 @@ void ShowInfo(const char *str)
 #if !defined(__APPLE__)
 void ShowOSErrorBox(const char *buf, bool system)
 {
+#ifdef __ANDROID__
+	__android_log_print(ANDROID_LOG_FATAL, "OpenTTD", "[ERROR] %s", buf);
+#endif
 	/* All unix systems, except OSX. Only use escape codes on a TTY. */
 	if (isatty(fileno(stderr))) {
 		fprintf(stderr, "\033[1;31mError: %s\033[0;39m\n", buf);