Merge pull request #991 from WindowsAzure/release-0.7.3

Release 0.7.3
Update ChangeLog.txt
Merge pull request #1000 from WindowsAzure/master

Merge master back to dev
Pointing XPLAT to dev branch
Using generated wrappers for SQL
Merge pull request #1001 from andrerod/sql_wrappers

Convert SQL commands to generated wrappers
Updating my branch