Replace common.import_and_make with common.generate in ZIP generator scripts
Fix default response expected flag for enumerate function
Make subprocess call errors in generator scripts fatal
delphi: Add missing copyright notices
Improve und unify code for response expected flag handling

Reduce the amount of unnecessary function call by caching results
especially in Java.
Fix typos
Add Visual Basic .NET bindings
Add Master API:
 - SetWifiHostname
 - GetWifiHostname
 - SetCurrentCallbackPeriod
 - GetCurrentCallbackPeriod
 - SetVoltageCallbackPeriod
 - GetVoltageCallbackPeriod
 - SetUSBVoltageCallbackPeriod
 - GetUSBVoltageCallbackPeriod
 - SetCurrentCallbackThreshold
 - GetCurrentCallbackThreshold
 - SetVoltageCallbackThreshold
 - GetVoltageCallbackThreshold
 - SetUSBVoltageCallbackThreshold
 - GetUSBVoltageCallbackThreshold
 - SetDebouncePeriod
 - GetDebouncePeriod
 - Current (Callback)
 - Voltage (Callback)
 - USBVoltage (Callback)
 - CurrentReached (Callback)
 - VoltageReached (Callback)
 - USBVoltageReached (Callback)
Merge branch 'master' of github.com:Tinkerforge/generators

Conflicts:
	configs/brick_master_config.py
Don't generate ZIP files if run on tinkerforge.com
Use StackVoltage and StackCurrent instead of Voltage and Current
Update changelog
Document empty string for hostname
Merge branch 'master' of github.com:Tinkerforge/generators
Improve SetChibi/RS485SlaveAddress documentation
Fix serialization of unicode strings for python bindings
Merge branch 'master' of github.com:Tinkerforge/generators
java: Add missing item to changelog entry for 2.0.4
python: Add missing padding to changed struct packing for strings
php: Fix dispatch of pending enumerate callback when dispatchCallbacks(-1) is used