clock, datetime, dayselector: Fix and clean up doxygen documentation.

legacy/elementary/src/lib/elm_clock_common.h

@@ -1,4 +1,12 @@
 /**
+ * @addtogroup Clock
+ *
+ * @{
+ */
+
+/**
+ * @enum Elm_Clock_Edit_Mode
+ *
  * Identifiers for which clock digits should be editable, when a
  * clock widget is in edition mode. Values may be OR-ed together to
  * make a mask, naturally.
@@ -18,3 +26,6 @@ typedef enum
    ELM_CLOCK_EDIT_ALL = (1 << 6) - 1 /**< All digits should be editable */
 } Elm_Clock_Edit_Mode;
 
+/**
+ * @}
+ */

legacy/elementary/src/lib/elm_datetime_common.h

@@ -1,9 +1,14 @@
+/**
+ * @addtogroup Datetime
+ *
+ * @{
+ */
+
 /**
  * Identifies a Datetime field, The widget supports 6 fields : Year, month,
  * Date, Hour, Minute, AM/PM
- *
  */
-typedef enum _Elm_Datetime_Field_Type
+typedef enum
 {
    ELM_DATETIME_YEAR    = 0, /**< Indicates Year field */
    ELM_DATETIME_MONTH   = 1, /**< Indicates Month field */
@@ -13,3 +18,6 @@ typedef enum _Elm_Datetime_Field_Type
    ELM_DATETIME_AMPM    = 5, /**< Indicates AM/PM field */
 } Elm_Datetime_Field_Type;
 
+/**
+ * @}
+ */

legacy/elementary/src/lib/elm_dayselector_common.h

@@ -1,3 +1,9 @@
+/**
+ * @addtogroup Dayselector
+ *
+ * @{
+ */
+
 /**
  * Identifies the day of the week.
  * API can call the selection/unselection of day with this as a parameter.
@@ -17,3 +23,6 @@ typedef enum
    ELM_DAYSELECTOR_MAX     /**< Sentinel value, @b don't use */
 } Elm_Dayselector_Day;
 
+/**
+ * @}
+ */