Clean up the documentation surrounding the APR_INCOMPLETE status code,

* include/apr_file_info.h
  (apr_stat, apr_dir_read): Note that APR_INCOMPLETE can be returned, and
   that if it is you can use the finfo->valid bitfield to determine which
   parts of the finfo are filled in.  Also break some overly long lines.

* include/apr_errno.h
  (APR_STATUS_IS_INCOMPLETE): Update docs since this is no longer specific
   to the xlate code.

* CHANGES: Note change.


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@356615 13f79535-47bb-0310-9956-ffa450edef68

CHANGES

@@ -1,5 +1,10 @@
 Changes for APR 1.3.0
 
+  *) Documented that apr_stat and apr_dir_read can return APR_INCOMPLETE,
+     and how to determine which parts of the resulting apr_finfo_t can be
+     used in such a case.
+     [Garrett Rooney]
+
   *) Cause apr_file_write_full on win32 to consider the timeout value set by 
      apr_file_pipe_timeout_set.  PR 30182
      [<eholyat olf.com>]

include/apr_errno.h

@@ -467,8 +467,8 @@ APR_DECLARE(char *) apr_strerror(apr_status_t statcode, char *buf,
  */
 #define APR_STATUS_IS_TIMEUP(s)         ((s) == APR_TIMEUP)
 /** 
- * The character conversion stopped because of an incomplete character or 
- * shift sequence at the end  of the input buffer.
+ * The operation was incomplete although some processing was performed
+ * and the results are partially valid.
  * @warning
  * always use this test, as platform-specific variances may meet this
  * more than one error code 

include/apr_file_info.h

@@ -224,8 +224,13 @@ struct apr_finfo_t {
  * @param finfo Where to store the information about the file, which is
  * never touched if the call fails.
  * @param fname The name of the file to stat.
- * @param wanted The desired apr_finfo_t fields, as a bit flag of APR_FINFO_ values 
+ * @param wanted The desired apr_finfo_t fields, as a bit flag of APR_FINFO_
+                 values 
  * @param pool the pool to use to allocate the new file. 
+ *
+ * @note If @c APR_INCOMPLETE is returned all the fields in @a finfo may
+ *       not be filled in, and you need to check the @c finfo->valid bitmask
+ *       to verify that what you're looking for is there.
  */ 
 APR_DECLARE(apr_status_t) apr_stat(apr_finfo_t *finfo, const char *fname,
                                    apr_int32_t wanted, apr_pool_t *pool);
@@ -255,9 +260,14 @@ APR_DECLARE(apr_status_t) apr_dir_close(apr_dir_t *thedir);
 /**
  * Read the next entry from the specified directory. 
  * @param finfo the file info structure and filled in by apr_dir_read
- * @param wanted The desired apr_finfo_t fields, as a bit flag of APR_FINFO_ values 
+ * @param wanted The desired apr_finfo_t fields, as a bit flag of APR_FINFO_
+                 values 
  * @param thedir the directory descriptor returned from apr_dir_open
  * @remark No ordering is guaranteed for the entries read.
+ *
+ * @note If @c APR_INCOMPLETE is returned all the fields in @a finfo may
+ *       not be filled in, and you need to check the @c finfo->valid bitmask
+ *       to verify that what you're looking for is there.
  */                        
 APR_DECLARE(apr_status_t) apr_dir_read(apr_finfo_t *finfo, apr_int32_t wanted,
                                        apr_dir_t *thedir);