Turn OS error codes into strings

[lptr]

Linux has strerror(), Windows has FormatMessage (see here). We should use these to turn error codes into strings when constructing our exceptions.

[wolfs]

We currently use strerror_r in other places:

native-platform/src/shared/cpp/generic_posix.cpp

Lines 27 to 38 in fd016e0

	void mark_failed_with_errno(JNIEnv* env, const char* message, jobject result) {
	char* buffer = (char*) malloc(1024);
	#if defined(__linux__) && _GNU_SOURCE
	// GNU semantics
	char* errno_message = strerror_r(errno, buffer, 1024);
	#else
	strerror_r(errno, buffer, 1024);
	char* errno_message = buffer;
	#endif
	mark_failed_with_code(env, message, errno, errno_message, result);
	free(buffer);
	}