Fix some compilation issues with GCC 4.7

src/graph/community/graph_community.hh

@@ -438,7 +438,7 @@ public:
 
     double operator()(size_t k, size_t s) const
     {
-        const typeof(_NNks[k])& nnks = _NNks.find(k)->second;
+        const unordered_map<size_t,double>& nnks = _NNks.find(k)->second;
         const typeof(nnks.begin()) iter = nnks.find(s);
         if (iter != nnks.end())
             return iter->second;

src/graph/fast_vector_property_map.hh

@@ -74,9 +74,6 @@ public:
                                 const IndexMap& index = IndexMap())
         : store(new std::vector<T>(initial_size)), index(index) {}
 
-    checked_vector_property_map(const unchecked_t& map)
-        : checked_vector_property_map(map.get_checked()) {}
-
     typename std::vector<T>::iterator storage_begin()
     {
         return store->begin();

src/graph/histogram.hh

@@ -20,6 +20,7 @@
 
 #include <vector>
 #include <utility>
+#include <algorithm>
 #include <boost/array.hpp>
 #define BOOST_DISABLE_ASSERTS
 #include <boost/multi_array.hpp>
@@ -118,7 +119,7 @@ public:
                         v[i] >= _data_range[i].second)
                         return; // out of bounds
                 }
-                
+
                 bin[i] = (v[i] - _data_range[i].first) / delta;
                 if (bin[i] >= _counts.shape()[i]) // modify shape
                 {
@@ -194,8 +195,8 @@ public:
 
                 typename Histogram::bin_t shape;
                 for (size_t i = 0; i <  this->_counts.num_dimensions(); ++i)
-                    shape[i] = max(this->_counts.shape()[i],
-                                   _sum->GetArray().shape()[i]);
+                    shape[i] = std::max(this->_counts.shape()[i],
+                                        _sum->GetArray().shape()[i]);
                 _sum->GetArray().resize(shape);
                 for (size_t i = 0; i < this->_counts.num_elements(); ++i)
                 {

src/graph/stats/graph_distance_sampled.hh

@@ -98,9 +98,9 @@ struct get_sampled_distance_histogram
         for (i = 0; i < int(n_samples); ++i)
         {
             vertex_t v;
+            tr1::uniform_int<size_t> randint(0, sources.size()-1);
             {
                 #pragma omp critical
-                tr1::uniform_int<size_t> randint(0, sources.size()-1);
                 size_t i = randint(rng);
                 v = sources[i];
                 swap(sources[i], sources.back());