Fix Abe always defaulting to NO_CLOB
Fix Abe always defaulting to NO_CLOB

Using the MySQL driver, I noticed Abe would no longer select LONGTEXT as
CLOB replacement. It turns out there was a mix of format string and SQL
parameter, but both values were passed to the SQL driver which obviously
didn't like it: This would silently default to BUG_NO_CLOB unless
logging was set to INFO or higher:

2015-01-28 00:47:50,599 [1925:MainThread] Abe.SqlAbstraction.sql INFO -
  EXCEPTION: not all arguments converted during string formatting

Catching "Exception" is one way used to tell a data type didn't work, so
this error was ignored as part of the logic.

Serya05/bitcoin-abe,cryptapus/bitcoin-abe,Dilmacoin/dilmacoin-abe,muchbeli/bitcoin-abe,jeorgen/bitcoin-abe,muchbeli/bitcoin-abe,mmitech/bitcoin-abe,Serya05/bitcoin-abe,Dilmacoin/dilmacoin-abe,jonnynewbs/bitcoin-abe,muchbeli/bitcoin-abe,jeorgen/bitcoin-abe,muchbeli/bitcoin-abe,jonnynewbs/bitcoin-abe,mmitech/bitcoin-abe,cryptapus/bitcoin-abe