UDF can be created from any library in any part of the server
LD_LIBRARY_PATH.
Allow to load udfs only from plugin_dir.
On windows, refuse to open udf in case it's path contains a slash.
No good test case for this bug because of imperfect error message
that includes error code and error string when it fails to dlopen a
library.
mysql-test/mysql-test-run.pl:
Since plugins are allowed to be open only from plugin_dir:
- there is no sence to update LD_LIBRARY_PATH
- there is no sence to add plugin_dir arg by default
- set UDF_EXAMPLE_LIB_OPT and EXAMPLE_PLUGIN_OPT to be used by
udf and plugin tests accordingly.
mysql-test/r/plugin.result:
Updated test result (we report addition warning).
sql/sql_udf.cc:
Allow to load udfs only from plugin_dir.
On windows, refuse to open udf in case it's path contains a slash.
mysql-test/t/plugin-master.opt:
New BitKeeper file ``mysql-test/t/plugin-master.opt''
mysql-test/t/udf-master.opt:
New BitKeeper file ``mysql-test/t/udf-master.opt''
