Add a "fork" of musl as //fusl.

fusl/src/process/execlp.c

Index: fusl/src/process/execlp.c
diff --git a/fusl/src/process/execlp.c b/fusl/src/process/execlp.c
new file mode 100644
index 0000000000000000000000000000000000000000..5eed886e716fa9721bf953b877df19a89bd5718f
--- /dev/null
+++ b/fusl/src/process/execlp.c
@@ -0,0 +1,22 @@
+#include <unistd.h>
+#include <stdarg.h>
+
+int execlp(const char *file, const char *argv0, ...)
+{
+	int argc;
+	va_list ap;
+	va_start(ap, argv0);
+	for (argc=1; va_arg(ap, const char *); argc++);
+	va_end(ap);
+	{
+		int i;
+		char *argv[argc+1];
+		va_start(ap, argv0);
+		argv[0] = (char *)argv0;
+		for (i=1; i<argc; i++)
+			argv[i] = va_arg(ap, char *);
+		argv[i] = NULL;
+		va_end(ap);
+		return execvp(file, argv);
+	}
+}