a typo caused plugins to have no MYSQL_SERVER symbol defined.

don't try to define it for plugins, then, as they don't need it.

cmake/plugin.cmake

@@ -133,7 +133,6 @@ MACRO(MYSQL_ADD_PLUGIN)
     ENDIF()
 
     ADD_LIBRARY(${target} STATIC ${SOURCES})
-    SET_TARGET_PROPERTIES(${target} PROPERTIES COMPILE_DEFINITONS "MYSQL_SERVER")
     DTRACE_INSTRUMENT(${target})
     ADD_DEPENDENCIES(${target} GenError ${ARG_DEPENDENCIES})
     RESTRICT_SYMBOL_EXPORTS(${target})
@@ -146,7 +145,7 @@ MACRO(MYSQL_ADD_PLUGIN)
         DTRACE_INSTRUMENT(${target}_embedded)   
         IF(ARG_RECOMPILE_FOR_EMBEDDED)
           SET_TARGET_PROPERTIES(${target}_embedded 
-            PROPERTIES COMPILE_DEFINITIONS "MYSQL_SERVER;EMBEDDED_LIBRARY")
+            PROPERTIES COMPILE_DEFINITIONS "EMBEDDED_LIBRARY")
         ENDIF()
         ADD_DEPENDENCIES(${target}_embedded GenError)
       ENDIF()