telepathy-qt: cmake: use CMakePackageConfigHelpers

[Alexandr Akulich]

Module: telepathy-qt
Branch: master
Commit: fb2410ae1e924a62fd2bedb72e168fdcf8570eaf
URL:    http://cgit.freedesktop.org/telepathy/telepathy-qt/commit/?id=fb2410ae1e924a62fd2bedb72e168fdcf8570eaf

Author: George Kiagiadakis <gkiagia at tolabaki.gr>
Date:   Thu Jun 23 17:19:31 2016 +0300

cmake: use CMakePackageConfigHelpers

...and therefore remove the bundled MacroWriteBasicCMakeVersionFile

This gives the advantages that configure_package_config_file() gives
and also removes the need for us to maintain one more macro.

---

 TelepathyQt/CMakeLists.txt                         | 48 +++++++++++-----------
 TelepathyQt/Farstream/CMakeLists.txt               | 19 +++++----
 .../Farstream/TelepathyQtFarstreamConfig.cmake.in  | 11 +++--
 TelepathyQt/TelepathyQtConfig.cmake.in             | 11 +++--
 TelepathyQt/TelepathyQtServiceConfig.cmake.in      | 10 +++--
 cmake/modules/BasicFindPackageVersion.cmake.in     | 30 --------------
 .../modules/MacroWriteBasicCMakeVersionFile.cmake  | 21 ----------
 7 files changed, 56 insertions(+), 94 deletions(-)

Diff:   http://cgit.freedesktop.org/telepathy/telepathy-qt/diff/?id=fb2410ae1e924a62fd2bedb72e168fdcf8570eaf