Added several functions (to ctype.h, stdlib.h)

"Optimised" some functions in string.h
Added dynamic libraries support based on sysfunction 68.19 (experimental)

git-svn-id: svn://kolibrios.org@215 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/metcc/trunk/libc/string/atoi.c

@@ -0,0 +1,21 @@
+#include "stdio.h"
+#include "stdlib.h"
+#include "ctype.h"
+
+
+/*
+** atoi(s) - convert s to integer.
+*/
+int atoi(char *s)
+{
+  int sign, n;
+  while(isspace(*s)) ++s;
+  sign = 1;
+  switch(*s) {
+    case '-': sign = -1;
+    case '+': ++s;
+    }
+  n = 0;
+  while(isdigit(*s)) n = 10 * n + *s++ - '0';
+  return (sign * n);
+}