Fix C++14 compilation errors -- since C++11 make_pair<T1,T2> is resolved to
make_pair(T1&&, T2&&). Types should be deduced.
Gentoo bug: https://bugs.gentoo.org/show_bug.cgi?id=594312

--- a/bact_classify.cpp
+++ b/bact_classify.cpp
@@ -86,7 +86,7 @@
 	if (id == -2) continue;
 	if (id != -1) {
 	  if (userule) 
-	    rules.insert (std::make_pair <std::string, double> (item, alpha[id]));
+	    rules.insert (std::make_pair(item, alpha[id]));
 	  result.push_back (id);
 	}
 	project (item, size+1, newdepth, l, new_trie_pos, new_str_pos);
@@ -138,7 +138,7 @@
        if (id == -2) continue;
        if (id >= 0) {
 	 if (userule) 
-	   rules.insert (std::make_pair <std::string, double> (tree[i].val.key(), alpha[id]));
+	   rules.insert (std::make_pair(tree[i].val.key(), alpha[id]));
 	 result.push_back (id);
        }
        project (tree[i].val.key(), 1, 0, i, 0, 0);
@@ -158,7 +158,7 @@
 
     for (std::map <std::string, double>::iterator it = rules.begin();
 	 it != rules.end(); ++it) 
-      tmp.push_back (std::make_pair <std::string, double> (it->first,  it->second));
+      tmp.push_back (std::make_pair(it->first,  it->second));
       
     std::sort (tmp.begin(), tmp.end(), pair_2nd_cmp<std::string, double>());
 
--- a/bact_mkmodel.cpp
+++ b/bact_mkmodel.cpp
@@ -111,7 +111,7 @@
    
   for (std::map<std::string, double>::iterator it = rules.begin(); it != rules.end(); ++it) {
     double a = it->second / alpha_sum;
-    ary2.push_back (std::make_pair <const char*, double>(it->first.c_str(), a));
+    ary2.push_back (std::make_pair(it->first.c_str(), a));
     ary.push_back  ((Darts::DoubleArray::key_type *)it->first.c_str());
     alpha.push_back (a);
   }