make it build (and get wibo update from ph)

libs/c/include/string.h

@@ -0,0 +1,15 @@
+#ifndef _C_STRING_H
+#define _C_STRING_H
+
+typedef unsigned int size_t;
+
+size_t strlen(const char *str);
+char *strcpy(char *dest, const char *src);
+char *strncpy(char *dest, const char *src, size_t num);
+char *strcat(char *dest, const char *src);
+int strcmp(char *str1, char *str2);
+int strncmp(char *str1, char *str2, size_t num);
+const char *strchr(const char *str, char ch);
+const char *strstr(const char *str1, const char *str2);
+
+#endif