add changes to sqlite_ex and some new files

minprintf.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+#include <stdarg.h>
+
+void minprintf(char *fmt, ...) {
+  va_list arg_pointer;
+  char *p, *sval;
+  int ival;
+  double dval;
+
+  va_start(arg_pointer, fmt);
+  for (p = fmt; *p; p++) {
+    if (*p != '%') {
+      putchar(*p);
+      continue;
+    }
+    switch(*++p) {
+      case 'd':
+        ival = va_arg(arg_pointer, int);
+        printf("%d", ival);
+        break;
+      case 'f':
+        dval = va_arg(arg_pointer, double);
+        printf("%f", dval);
+        break;
+      case 's':
+        for(sval = va_arg(arg_pointer, char*); *sval; sval++)
+          putchar(*sval);
+        break;
+      default:
+        putchar(*p);
+        break;
+    }
+  }
+  va_end(arg_pointer);
+}