create_installer: Add missing --installer-framework-openssl option

This option is used by bld_ifw_tools.py to change the OpenSSL
library path on Windows and to prevent an error in create_installer.py
when called with --devmode.

Change-Id: I9504475baca4f42429106fa1dd5f174c1db5caf6
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>
Fix patcher operation for 5.0.x and 5.1.x

Remove extra '/' between @TargetDir@ and %TARGET_INSTALL_DIR%
causing paths look like /Developer/Qt/5.1.0//5.1.0/clang_64/...

Task-number: QTBUG-32365
Change-Id: I7748aca31a5eea511545c87d73d3e211b9539144
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>