mysql-test/r/view_query_cache.result:
  Fixed test to be environment independ
  Invalidation of view checked
  Join view with QC checked
mysql-test/t/view_query_cache.test:
  Fixed test to be environment independ
  Invalidation of view checked
  Join view with QC checked
sql/sql_cache.cc:
  support of VIEW added to QC
sql/sql_cache.h:
  support of VIEW added to QC
sql/sql_view.cc:
  invalidation of QC added to altering/droping VIEW commands