Use defines for options window size. Fixes #231.
Merge pull request #232 from adrian17/master

Use defines for options window size. Fixes #231.
Used defined flags macros. (and fixed indentation)
Add SCROLL_FLAGS enum (and fix an hidden bug in widget_scroll_get_part)
Fixes issue with footpath closing
Merge pull request #234 from adrian17/master

Small work on flags defines, added SCROLL_FLAGS enum
Merge pull request #235 from duncanspumpkin/fix_footpath_update

Fixes issue with footpath closing
Implemented LoadCursor function.
Added a setcursor function
Trying a different set_cursor interface to make multiple os support easier