wm: teppich

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include/libc.h: add new functions

--- a/include/libc.h

+++ b/include/libc.h

@@ -11,6 +11,7 @@

 int strccnt(char *s, char c);

 long strtol(char *nptr, char **endptr, int base);

 char* strncpy(char *dst, const char *src, size_t num);

+char* strncat(char *s1, char *s2, long n);

 void* memset(void* src, char c, unsigned int len);

 void* memcpy(void *a1, void *a2, unsigned int len);

@@ -17,6 +18,8 @@

 int lladd(ll_t*, void*);

 int lldel(ll_t*);

+int lllen(ll_t *head);

+void llfree(ll_t *head);

 int printf(const char* restrict format, ...);

 int scanf (char * str, ...);