Fixed shadow builds on platforms other than Windows.
Fixed shadow builds on platforms other than Windows.

This example .pro file was doing

  DESTDIR = $$OUT_PWD

... apparently to escape from the debug/release subdirectory on
Windows.

This is redundant on Linux, and actually harmful, because when DESTDIR
is set, the generated makefile includes commands conceptually similar
to:

  rm -f $$DESTDIR/$$TARGET
  mv $$OUT_PWD/$$TARGET $$DESTDIR/$$TARGET

Therefore, if DESTDIR equals OUT_PWD, the TARGET itself is deleted.

Change-Id: I73278d9aec0d37200c8bc9c9755145f4968b2684
Reviewed-by: Toby Tomkins
Sanity-Review: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>
Reviewed-by: Toby Tomkins <23ead35e36f9890dd80f47acf9947179b1bd7fe7@nokia.com>

kobolabs/qtsensors,mer-qt/qtsensors,kobolabs/qtsensors,kobolabs/qtsensors,richardmg/qtsensors,mer-qt/qtsensors,richardmg/qtsensors,mer-qt/qtsensors,richardmg/qtsensors,kobolabs/qtsensors,richardmg/qtsensors,mer-qt/qtsensors,mer-qt/qtsensors,richardmg/qtsensors