Provide a way to reenable DISABLED plugin with -DPLUGIN_${NAME}=STATIC|DYNAMIC

cmake/plugin.cmake

@@ -74,7 +74,9 @@ MACRO(MYSQL_ADD_PLUGIN)
       SET(compat "with${compat}")
     ENDIF()
 
-    IF (compat STREQUAL ".")
+    IF (ARG_DISABLED)
+      SET(howtobuild NO)
+    ELSEIF (compat STREQUAL ".")
       SET(howtobuild DYNAMIC)
     ELSEIF (compat STREQUAL "with.")
       IF (NOT ARG_MODULE_ONLY)
@@ -122,7 +124,7 @@ MACRO(MYSQL_ADD_PLUGIN)
 
   # Build either static library or module
   IF (PLUGIN_${plugin} MATCHES "(STATIC|AUTO|YES)" AND NOT ARG_MODULE_ONLY
-      AND NOT ARG_DISABLED AND NOT ARG_CLIENT)
+      AND NOT ARG_CLIENT)
 
     IF(CMAKE_GENERATOR MATCHES "Makefiles|Ninja")
       # If there is a shared library from previous shared build,
@@ -178,8 +180,7 @@ MACRO(MYSQL_ADD_PLUGIN)
       SET (mysql_optional_plugins ${mysql_optional_plugins} PARENT_SCOPE)
     ENDIF()
   ELSEIF(PLUGIN_${plugin} MATCHES "(DYNAMIC|AUTO|YES)"
-         AND NOT ARG_STATIC_ONLY  AND NOT WITHOUT_DYNAMIC_PLUGINS
-         AND NOT ARG_DISABLED)
+         AND NOT ARG_STATIC_ONLY AND NOT WITHOUT_DYNAMIC_PLUGINS)
 
     ADD_VERSION_INFO(${target} MODULE SOURCES)
     ADD_LIBRARY(${target} MODULE ${SOURCES})