* Weight paint: brush strength was changed to both define weight
and strength, this can't work, made them separate buttons.
* Allow adding particle system as modifier (fix crash).
* 3D view modal ops (zoom ..) could not be ended when invoked
from a button.
* Fix some warnings.
* Fix spelling in particle RNA property.
* 2 new enums event_value_items and event_type_items in RNA_enum_types.h
* WM_key_event_string now uses an RNA enum lookup rather then its own switch statement.
* moved wmEvent from WM_types.h into DNA_windowmanager_types.h
* added RNA_enum_identifier and RNA_enum_name to get strings from an enum value.
Transform operator replay
Basic support working. Only saves mode and values, not constraint setup.
Removed event pointer from TransInfo (it's not available in operator exec). Replaced checks to event->modifiers to a functional modifier bitfield in TransInfo (that is, instead of checking for Shift, it checks for MOD_PRECISION) to make it remappable later.
Misc:
X-Mirror for mesh now working with transform
Transform house cleaning. Gattering input methods in specialized code. It's not missing much before it can be used standalone (for example, to use the mouse to specify remove doubles threshold interactively).
Note to Aligorith: Transformations using INPUT_NONE (most Time* stuff) would use a cleanup.
