Fix up compiler warnings

LibGit2Sharp/Configuration.cs

@@ -661,7 +661,6 @@ public virtual void Set<T>(string key, T value, ConfigurationLevel level)
         ///   repo.Config.Add("test.plugin", "first");
         /// </para>
         /// </summary>
-        /// <typeparam name="T">The configuration value type</typeparam>
         /// <param name="key">The key parts</param>
         /// <param name="value">The value</param>
         public virtual void Add(string key, string value)
@@ -682,7 +681,6 @@ public virtual void Add(string key, string value)
         ///   repo.Config.Add("test.plugin", "first");
         /// </para>
         /// </summary>
-        /// <typeparam name="T">The configuration value type</typeparam>
         /// <param name="key">The key parts</param>
         /// <param name="value">The value</param>
         /// <param name="level">The configuration file which should be considered as the target of this operation</param>

LibGit2Sharp/GlobalSettings.cs

@@ -351,6 +351,10 @@ public static void SetConfigSearchPaths(ConfigurationLevel level, params string[
             Proxy.git_libgit2_opts_set_search_path(level, pathString);
         }
 
+        /// <summary>
+        /// Enable or disable strict hash verification.
+        /// </summary>
+        /// <param name="enabled">true to enable strict hash verification; false otherwise.</param>
         public static void SetStrictHashVerification(bool enabled)
         {
             Proxy.git_libgit2_opts_enable_strict_hash_verification(enabled);

LibGit2Sharp/Remote.cs

@@ -34,6 +34,9 @@ internal Remote(RemoteHandle handle, Repository repository)
             repository.RegisterForCleanup(this);
         }
 
+        /// <summary>
+        /// The finalizer for the <see cref="Remote"/> class.
+        /// </summary>
         ~Remote()
         {
             Dispose(false);

LibGit2Sharp/SmartSubtransport.cs

@@ -84,6 +84,13 @@ public int CertificateCheck(Certificate cert, bool valid, string hostname)
             return ret;
         }
 
+        /// <summary>
+        /// Acquires credentials.
+        /// </summary>
+        /// <param name="cred">Receives the credentials if the operation is successful.</param>
+        /// <param name="user">The username.</param>
+        /// <param name="methods">The credential types allowed. The only supported one is <see cref="UsernamePasswordCredentials"/>. May be empty but should not be null.</param>
+        /// <returns>0 if successful; a non-zero error code that came from <see cref="Proxy.git_transport_smart_credentials"/> otherwise.</returns>
         public int AcquireCredentials(out Credentials cred, string user, params Type[] methods)
         {
             // Convert the user-provided types to libgit2's flags