add --enable-strict option to configure:  * when it is used and when another --enable-foo is passed, if foo is    not found, configure fails and displays an error message.  * when it is not used, the old behavior (auto-detect) is not changed: if    --enable-foo is passed and foo is not found, configure does not fail.
add --enable-strict option to configure:
 * when it is used and when another --enable-foo is passed, if foo is
   not found, configure fails and displays an error message.
 * when it is not used, the old behavior (auto-detect) is not changed: if
   --enable-foo is passed and foo is not found, configure does not fail.


git-svn-id: de1cbd220ac9a29ed59a7cc342d87cbce0beeb96@33014 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

antognolli/Evas,antognolli/Evas,antognolli/Evas,antognolli/Evas