fix version

Author: weltling

Diff for: configure.in

@@ -120,7 +120,7 @@ int zend_sprintf(char *buffer, const char *format, ...);
 PHP_MAJOR_VERSION=7
 PHP_MINOR_VERSION=0
 PHP_RELEASE_VERSION=13
-PHP_EXTRA_VERSION="-RC1"
+PHP_EXTRA_VERSION="RC1"
 PHP_VERSION="$PHP_MAJOR_VERSION.$PHP_MINOR_VERSION.$PHP_RELEASE_VERSION$PHP_EXTRA_VERSION"
 PHP_VERSION_ID=`expr [$]PHP_MAJOR_VERSION \* 10000 + [$]PHP_MINOR_VERSION \* 100 + [$]PHP_RELEASE_VERSION`