Put descriptions of plugins into a separate file read by MTR
MTR itself has generalised code to read this and set env. variables
Removed the *SO variables, updated some tests accordingly
New commit: added optional list of plugin names for _LOAD variable
Also made changes for the new AUTH_* plugins
(server crash)
Altering a table with fulltext index[es] which use
pluggable fulltext parser may cause server crash
in debug builds.
The problem was that ALTER TABLE code wrongly assigned
fulltext parser name.
Also fixed that altering a table with fulltext index[es]
leave stale fulltext parser locks, which prevent
fulltext parsers from being uninstalled after
ALTER TABLE.