Fix profiling names

Description

Fix profiling names by replacing names by X(...) in _inc.F90 files.

With this change, the complex and real variants of the functions can be distinguished. Moreover, if called in the same run, they will not show up twice with the same name in the profiling output.

Fixes #299 (closed).

News snippet

Fix profiling names

Checklist

• I have checked that my code follows the Octopus coding standards
• I have added tests for all the new features added in this request.