updating debian packages from holland-1.1
updating build scripts

- adding build_release.py to generate release tarballs
- updating build_debs.py to generate better 1.1 debs
Fix import error in mkvirtenv.py on OSX
cleanup build debs
Add sys.path (and move install_configs back before start_shell()
Added Python env header to build_debs.py
Added mention in README of how to run build_debs.py
use os.path.abspath on sys.path
Merge pull request #73 from derks/amsterdam

Fix import error in mkvirtenv.py on OSX
Updated default.conf to include some of the new options
Removed old references to Maatkit and mysqlhotcopy in source tree
allow fine-tuning the transactional test in MySQLSchema

This allows the mysqldump plugin to auto-set --single-transaction in more
cases where it is safe to do so.
- a table can be specified as transactional either via a global database name,
  table name or engine option
- MySQLSchema now supports 3 additional transactional_{database,table,engine}
  filters to auto-set a tables is_transactional property to True
Removed example plugin references. Updated docs in example backup-sets.
Added Backup-Sets stub in docs
Updated docs with stubs for backup-sets
add lockless-only option to mysqldump plugin

- this option will abort if holland would run mysqldump in a mode
  that would lock any tables
cleanup logging in mysqldump runner
avoid referencing MySQLdb.connections in MySQLClient
Resolved LP#782807 Uncaught exception "ZeroDivisionError: float division by zero"
add sum to return