Bug#797980: kdevelop: Missing .so file in kdevelop.install

[张敬强]

> usr/lib/libkdevcompilerprovider.so should be added to kdevelop.install file,
> without which KDevDefinesAndIncludesManager won't work.
This plugin crash kdevelop now, but it did work before the gcc 5 transition.
I will test latest official 4.7 branch.