Revert "component/default: system gcc can be used only if all gcc, g++ and...

Revert "component/default: system gcc can be used only if all gcc, g++ and gfortran exist and their versions are same."

This reverts commit eb7edc8f.
5 jobs for zope4py3 in 0 seconds
Status Job ID Name Coverage
  External
failed ERP5.CodingStyleTest-Zope4Py3-py2

01:27:06

failed ERP5.UnitTest-Zope4Py3

04:06:29

failed SlapOS.SoftwareReleases.IntegrationTest-zope4py3

08:10:38

failed ERP5.CodingStyleTest-Zope4Py3-py2

06:43:44

failed ERP5.UnitTest-Zope4Py3

07:15:59