* configure.ac: Add -Wno-unused-const-variable as we use const variables    in several internal header files and recent gcc will issue warnings.
* configure.ac: Add -Wno-unused-const-variable as we use const variables
   in several internal header files and recent gcc will issue warnings.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1718820 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion