Use the new toupper functions

Use the new ASCII upper case functions in ext/xml, ext/pdo_dblib and as
an optimization for strtoupper() when the locale is "C".

Author: tstarling

ext/pdo_dblib/dblib_stmt.c

@@ -438,7 +438,7 @@ static int pdo_dblib_stmt_get_col(pdo_stmt_t *stmt, int colno, zval *zv, enum pd
 						tmp_data_len = 36;
 						tmp_data = safe_emalloc(tmp_data_len, sizeof(char), 1);
 						data_len = dbconvert(NULL, SQLUNIQUE, data, data_len, SQLCHAR, (LPBYTE) tmp_data, tmp_data_len);
-						php_strtoupper(tmp_data, data_len);
+						zend_str_toupper(tmp_data, data_len);
 						ZVAL_STRINGL(zv, tmp_data, data_len);
 						efree(tmp_data);
 					} else {

ext/standard/string.c

@@ -1362,6 +1362,9 @@ PHPAPI zend_string *php_string_toupper(zend_string *s)
 	unsigned char *c;
 	const unsigned char *e;
 
+	if (EXPECTED(!BG(ctype_string))) {
+		return zend_string_toupper(s);
+	}
 	c = (unsigned char *)ZSTR_VAL(s);
 	e = c + ZSTR_LEN(s);
 

ext/xml/xml.c

@@ -611,7 +611,7 @@ static zend_string *_xml_decode_tag(xml_parser *parser, const char *tag)
 	str = xml_utf8_decode((const XML_Char *)tag, strlen(tag), parser->target_encoding);
 
 	if (parser->case_folding) {
-		php_strtoupper(ZSTR_VAL(str), ZSTR_LEN(str));
+		zend_str_toupper(ZSTR_VAL(str), ZSTR_LEN(str));
 	}
 
 	return str;