user: implement mlibc as the libc, finally.

It's finally done..

Signed-off-by: kaguya <vpshinomiya@protonmail.com>

user/include/mlibc/tests/linux/cpuset.c

@@ -0,0 +1,27 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <sched.h>
+
+#define SET_SIZE 15
+
+int main() {
+	cpu_set_t *set = CPU_ALLOC(SET_SIZE);
+	size_t setsize = CPU_ALLOC_SIZE(SET_SIZE);
+
+	CPU_ZERO_S(setsize, set);
+
+	assert(!CPU_ISSET_S(11, setsize, set));
+
+	CPU_SET_S(11, setsize, set);
+	assert(CPU_ISSET_S(11, setsize, set));
+	assert(CPU_COUNT_S(setsize, set) == 1);
+
+	assert(!CPU_ISSET_S(CPU_SETSIZE - 1, setsize, set));
+
+	CPU_CLR_S(11, setsize, set);
+	assert(!CPU_ISSET_S(11, setsize, set));
+
+	CPU_FREE(set);
+
+	return 0;
+}