Build the split-select tool without C++11 support

It was complicated to get the tool building on Windows, Linux,
and OSX with C++11 support.

OSX uses Clang to build C++11 binaries, which requires the libc++
standard library. Since most of the dependencies of this program
are built against libstdc++, this was difficult to resolve.

Now we build without C++11 support.

Change-Id: I4e537c113734508a8f480a1c402ed237de4f0e60
diff --git a/tools/split-select/Main.cpp b/tools/split-select/Main.cpp
index d6251c3..434494e 100644
--- a/tools/split-select/Main.cpp
+++ b/tools/split-select/Main.cpp
@@ -63,7 +63,7 @@
 
 class SplitSelector {
 public:
-    SplitSelector() = default;
+    SplitSelector();
     SplitSelector(const Vector<SplitDescription>& splits);
 
     Vector<SplitDescription> getBestSplits(const SplitDescription& target) const;
@@ -75,6 +75,9 @@
     Vector<SortedVector<SplitDescription> > mGroups;
 };
 
+SplitSelector::SplitSelector() {
+}
+
 SplitSelector::SplitSelector(const Vector<SplitDescription>& splits)
     : mGroups(groupByMutualExclusivity(splits)) {
 }