Do not use $ORIGIN in RUNPATH so that executables can be copied elsewhere and
still be expected to work (needed for python-pyside-2-tools).

diff --git a/mkspecs/common/linux.conf b/mkspecs/common/linux.conf
--- a/mkspecs/common/linux.conf
+++ b/mkspecs/common/linux.conf
@@ -10,8 +10,8 @@ QMAKE_CFLAGS_THREAD    += -D_REENTRANT
 QMAKE_CXXFLAGS_THREAD  += $$QMAKE_CFLAGS_THREAD
 QMAKE_LFLAGS_GCSECTIONS = -Wl,--gc-sections
 
-QMAKE_LFLAGS_REL_RPATH  = -Wl,-z,origin
-QMAKE_REL_RPATH_BASE    = $ORIGIN
+QMAKE_LFLAGS_REL_RPATH  =
+QMAKE_REL_RPATH_BASE    =
 
 QMAKE_INCDIR            =
 QMAKE_LIBDIR            =