Factor out readStructColumns
Support nested fields in embedded structs
Handle reading into embedded structs when using Select
Panic when the user requests an auto-inc pkey.

Setting auto-increment for a multi-column primary key presently fails
silently; this makes it fail loudly.

A better fix would be to figure out where/why the silent failure occurs.
Merge pull request #51 from bensigelman/master

Panic when the user requests an auto-inc pkey with multiple cols
Add doc comment about panic().  Modify panic to occur if isAutoIncr and len(fieldNames) != 1
#49 - add dbmap.DropTablesIfExists method
minor test changes to fix merge conflicts and package change
Quote table names in Get
Merge pull request #55 from msolomon/quote-table-name-on-get

Quote table names in Get
Add Select* helper methods to SqlExecutor interface
Compile-time check that DbMap and Transaction implement the SqlExecutor interface
add embedded structs example to readme
Merge pull request #57 from sqs/Select_helpers_in_SqlExecutor

Add Select* helper interface methods to SqlExecutor