message: Fix cmake errors
diff: @@ -133,7 +133,7 @@ IF(APPLE)
  # just always try to link it in on mac.
  find_package( ZLIB REQUIRED )
  ELSE(APPLE)
  - find_package( ZLIB )
  + find_package( ZLIB REQUIRED)
  ENDIF(APPLE)
  if( ZLIB_FOUND )
  @@ -145,7 +145,8 @@ else()
  endif( ZLIB_FOUND )
  hunter_add_package(BZip2)
  -find_package( BZip2 )
  +find_package( BZip2 CONFIG REQUIRED)
  +
  if( BZIP2_FOUND )
  MESSAGE( STATUS "bzip2 found" )
  add_definitions( -DHAS_BZIP2 )
  