Fix malformed GTK-Doc comment blocks: add missing colons.

Found these thanks to improved gobject-introspection GTK-Doc
comment block/annotation parser from:
https://bugzilla.gnome.org/show_bug.cgi?id=672254

https://bugzilla.gnome.org/show_bug.cgi?id=673385

gio/gdesktopappinfo.c

@@ -238,7 +238,7 @@ g_desktop_app_info_class_init (GDesktopAppInfoClass *klass)
   gobject_class->finalize = g_desktop_app_info_finalize;
 
   /**
-   * GDesktopAppInfo:filename
+   * GDesktopAppInfo:filename:
    *
    * The origin filename of this #GDesktopAppInfo
    */

gio/gfile.c

@@ -3323,7 +3323,7 @@ g_file_move (GFile                  *source,
 }
 
 /**
- * g_file_make_directory
+ * g_file_make_directory:
  * @file: input #GFile.
  * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
  * @error: a #GError, or %NULL 

gio/gfileinfo.c

@@ -2006,7 +2006,7 @@ g_file_info_set_size (GFileInfo *info,
 }
 
 /**
- * g_file_info_set_modification_time
+ * g_file_info_set_modification_time:
  * @info: a #GFileInfo.
  * @mtime: a #GTimeVal.
  *

gio/gmountoperation.c

@@ -483,7 +483,7 @@ g_mount_operation_new (void)
 }
 
 /**
- * g_mount_operation_get_username
+ * g_mount_operation_get_username:
  * @op: a #GMountOperation.
  * 
  * Get the user name from the mount operation.

gio/gproxyaddress.c

@@ -283,7 +283,7 @@ g_proxy_address_get_protocol (GProxyAddress *proxy)
 }
 
 /**
- * g_proxy_address_get_destination_hostname
+ * g_proxy_address_get_destination_hostname:
  * @proxy: a #GProxyAddress
  *
  * Gets @proxy's destination hostname.
@@ -299,7 +299,7 @@ g_proxy_address_get_destination_hostname (GProxyAddress *proxy)
 }
 
 /**
- * g_proxy_address_get_destination_port
+ * g_proxy_address_get_destination_port:
  * @proxy: a #GProxyAddress
  *
  * Gets @proxy's destination port.
@@ -315,7 +315,7 @@ g_proxy_address_get_destination_port (GProxyAddress *proxy)
 }
 
 /**
- * g_proxy_address_get_username
+ * g_proxy_address_get_username:
  * @proxy: a #GProxyAddress
  *
  * Gets @proxy's username.
@@ -331,7 +331,7 @@ g_proxy_address_get_username (GProxyAddress *proxy)
 }
 
 /**
- * g_proxy_address_get_password
+ * g_proxy_address_get_password:
  * @proxy: a #GProxyAddress
  *
  * Gets @proxy's password.

glib/gmem.c

@@ -494,7 +494,7 @@ fallback_calloc (gsize n_blocks,
 static gboolean vtable_set = FALSE;
 
 /**
- * g_mem_is_system_malloc
+ * g_mem_is_system_malloc:
  * 
  * Checks whether the allocator used by g_malloc() is the system's
  * malloc implementation. If it returns %TRUE memory allocated with

glib/gqueue.c

@@ -794,7 +794,7 @@ g_queue_link_index (GQueue *queue,
 }
 
 /**
- * g_queue_unlink
+ * g_queue_unlink:
  * @queue: a #GQueue
  * @link_: a #GList link that <emphasis>must</emphasis> be part of @queue
  *

glib/gscanner.c

@@ -659,7 +659,7 @@ g_scanner_lookup_internal (GScanner	*scanner,
 }
 
 /**
- * g_scanner_add_symbol
+ * g_scanner_add_symbol:
  * @scanner: a #GScanner
  * @symbol: the symbol to add
  * @value: the value of the symbol

glib/gtestutils.c

@@ -2482,7 +2482,7 @@ g_test_log_buffer_new (void)
 }
 
 /**
- * g_test_log_buffer_free
+ * g_test_log_buffer_free:
  *
  * Internal function for gtester to free test log messages, no ABI guarantees provided.
  */
@@ -2497,7 +2497,7 @@ g_test_log_buffer_free (GTestLogBuffer *tbuffer)
 }
 
 /**
- * g_test_log_buffer_push
+ * g_test_log_buffer_push:
  *
  * Internal function for gtester to decode test log messages, no ABI guarantees provided.
  */

glib/gurifuncs.h

@@ -39,7 +39,7 @@ G_BEGIN_DECLS
 #define G_URI_RESERVED_CHARS_GENERIC_DELIMITERS ":/?#[]@"
 
 /**
- * G_URI_RESERVED_CHARS_SUBCOMPONENT_DELIMITERS
+ * G_URI_RESERVED_CHARS_SUBCOMPONENT_DELIMITERS:
  * 
  * Subcomponent delimiter characters as defined in RFC 3986. Includes "!$&'()*+,;=".
  **/