Information_schema fixes for sequences and temporary tables

More to come, but these two are probably worth backpatching. Sequences
were not being shown due to the use of lowercase 's' instead of 'S', and
the views were not checking for table visibility with regards to
temporary tables and sequences.

--
Greg Sabino Mullane greg@turnstep.com
End Point Corporation
PGP Key: 0x14964AC8 200608181942
http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8