Min/max value computation; Tuning lock handling

BZ: 7466

- Min/max values are now correctly computed. They concern integer and fixed point parameters
- tuning mode lock issue solved: created an AutoLock class for safe lock handling
- added configuration files for a demo on Ubuntu environment
- had AMIXER subsystem plugin compliant for derivation
- LPE library: add carriage return on logs
- removed obsolete files
- some cosmetics

Change-Id: Ife7a4799fd48dd4a1ca25dae666c4e453815881e
Orig-Change-Id: I72fc5c1ff6abf638b43266a75bc00e21ad412349
Signed-off-by: Patrick Benavoli <patrickx.benavoli@intel.com>
Reviewed-on: http://android.intel.com:8080/16880
Reviewed-by: Mahe, Erwan <erwan.mahe@intel.com>
Tested-by: Barthes, FabienX <fabienx.barthes@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>
diff --git a/parameter/Element.cpp b/parameter/Element.cpp
index 915bc65..50c0774 100644
--- a/parameter/Element.cpp
+++ b/parameter/Element.cpp
@@ -689,7 +689,7 @@
 
     while (uiLength--) {
 
-        strTo += "─";
+        strTo += "=";
     }
     strTo += "\n";
 }