allow lang and xml:lang differ in case (b=292)
allow lang and xml:lang differ in case (b=292)

--HG--
extra : convert_revision : svn%3Ae7398766-c432-0410-9565-638d39ca0058/trunk%40337

validator/validator,tripu/validator,YOTOV-LIMITED/validator,YOTOV-LIMITED/validator,tripu/validator,takenspc/validator,tripu/validator,YOTOV-LIMITED/validator,validator/validator,tripu/validator,YOTOV-LIMITED/validator,takenspc/validator,sammuelyee/validator,YOTOV-LIMITED/validator,sammuelyee/validator,validator/validator,takenspc/validator,validator/validator,sammuelyee/validator,sammuelyee/validator,sammuelyee/validator,validator/validator,tripu/validator,takenspc/validator,takenspc/validator