/*
 * call-seq:
 *   easy.escape("some text")                         => "some%20text"
 *
 * Convert the given input string to a URL encoded string and return
 * the result. All input characters that are not a-z, A-Z or 0-9 are
 * converted to their "URL escaped" version (%NN where NN is a
 * two-digit hexadecimal number).
 */
static VALUE ruby_curl_easy_escape(VALUE self, VALUE svalue) {