Updating source to current work-in-progress and adding some non-source files

git-svn-id: https://svn.perl.org/modules/dbi/trunk@48 50811bd7-b8ce-0310-adc1-d9db26280581

Author: timbunce

Changes

@@ -6,6 +6,37 @@ DBI::Changes - List of significant changes to the DBI
 
 =head1 CHANGES
 
+set_err -> set_state?
+Add clear_state / clear_err
+Document smarts in set_err
+Drivers to change how they get debug level (with masked bits).
+
+  Fixed execute_for_array() so tuple_status parameter is optional
+    as per docs, thanks to Ed Avis.
+  Fixed execute_for_array() docs to say that it returns undef if
+    any of the execute() calls fail.
+  Fixed take_imp_data() test on m68k reported by Christian Hammers.
+  Fixed write_typeinfo_pm inconsistencies in DBI::DBD::Metadata
+    thanks to Andy Hassall.
+
+  Changed set_err() to append to errstr, with a leading "\n" if it's
+    not empty, so that multiple error/warning messages are recorded.
+  Changed trace to limit elements dumped when an array reference is
+    returned from a method to the max(40, $DBI::neat_maxlen/10)
+    so that fetchall_arrayref(), for example, doesn't flood the trace.
+
+  Added way for drivers to indicate 'success with info' or 'warning'
+    by setting err to "0" for warning and "" for information.
+    Both values are false and so don't trigger RaiseError etc.
+    Warnings (err="0") are automatically printed if PrintError is set.
+    Thanks to Steffen Goeldner for the original idea.
+  Added $h->{HandleSetError} = sub { ... } to be called at the
+    point that an error, warn, or info state is recorded.
+    The code can alter the err, errstr, and state values
+    (e.g., to promote an error to a warning, or the reverse).
+  Added details of DBI::Const::GetInfoType module to get_info() docs.
+  Added ref count of inner handle to "DESTROY ignored for outer" msg.
+
 =head2 Changes in DBI 1.40,    7th January 2004
 
   Fixed handling of CachedKids when DESTROYing threaded handles.