When set to Project Autobuild, an Autotools project will cause a rebuild to
occur whenever a new file is opened in the Navigator window. This is completely
unnecessary as no files have been changed.
A bug has been found in the code that was changing the CDT project file, every
time a new file was brought up for selection. The project file was being
changed because the ScannerInfoProvider was being set. This was done to handle
the case whereby a New Project Wizard for Managed Make Projects selects the
Autotools type. The code has been fixed to verify the ScannerInfoProvider
before setting it to prevent unnecessary changes to the project description.