Log Message:
Update kdevelop4 to 4.7.0, kdevplatform to 1.7.0

This new release of KDevelop comes with many important changes that should
ensure it will stay usable for the foreseeable future. The CMake support
was improved and extended to ensure that all idioms needed for KF5
development are available. The unit test support UI was polished and
several bugs fixed. In the same direction, some noteworthy issues with the
QtHelp integration were addressed. KDevelop's PHP language support now
handles namespaces better and can understand traits aliases. Furthermore,
some first fruits of the Google summer of code projects are included in
this release. These changes pave the path toward better support for cross
compile toolchains. Feature-wise, KDevelop now officially supports the
Bazaar (bzr) version control system. On the performance front, it was
possible to greatly reduce the memory footprint when loading large projects
with several thousand files in KDevelop. Additionally, the startup should
now be much faster.