After commit 70c22cb89f1c923c71cbc1a477c862fd947161e6 the activeqt tools (dumpcpp, dumpdoc and testcon) don't get built any more.

In this commit the variable SUBDIRS was set to 'src' for all targets in the top level qtactiveqt.pro file. This shouldn't be necessary as the qtbase file mkspecs/features/qt_parts.prf automatically sets this variable (to automatically include folders like 'src', 'tools', 'examples', 'demos' and 'tests' when they are available). Therefore it shouldn't be necessary to manually set SUBDIRS