pyside-tools build error (trivial change)

The version of pyside allowed in pyside-tools/CMakeLists.txt is too low
and contradicts the submodules table in setup.py.
As an effect, 'setup/py build' may find an older pyside-1.1.0 that was
installed elswhere, and the build crashes when trying to build pyside-tools.

The patch changes the minimum version pyside-tools/CMakeLists.txt
to 1.1.1 as in setup.py .

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1d609d7..9fa3169 100644
— a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,8 +3,8 @@ cmake_minimum_required(VERSION 2.6)
project(pyside-tools)

find_package(PythonInterp REQUIRED)
-find_package(Qt4 4.5.0 REQUIRED)
-find_package(PySide 1.0.6 REQUIRED)
+find_package(Qt4 4.6.0 REQUIRED)
+find_package(PySide 1.1.1 REQUIRED)

set(pyside_tools_MAJOR_VERSION "0")
set(pyside_tools_MINOR_VERSION "2")