Fix VS2010 and "error C2065: uint32_t: undeclared identifier" (GH #608)

We could fix aria.cpp by using word32. However, NaCl gear uses int64_t and we don't have a typedef setup for it. So we will need <cstdint> later for NaCl

integer.h

@@ -660,6 +660,7 @@ public:
 		///  modulo the Integer <tt>n</tt>. If no Integer exists then Integer 0 is returned.
 		/// \sa a_times_b_mod_c() and a_exp_b_mod_c()
 		Integer InverseMod(const Integer &n) const;
+
 		/// \brief Calculate multiplicative inverse
 		/// \param n the modulus
 		/// \returns a word <tt>*this % n</tt>.

stdcpp.h

@@ -52,6 +52,7 @@ namespace std {
 #include <cstdlib>
 #include <cstddef>
 #include <cstring>
+#include <cstdint>
 #include <climits>
 #include <cmath>