Support added for btnlook example.
Changes to support owndraw example.
Added definitions needed to get color1 working.
New edit control definitions.

Added edit control definitions needed to support the first poppad
example program.
Added environment variable definitions.

New definitions for getting information about environment variables.
Additional support for environ example.
First head related definitions.
More support definitions for head example.

Added more file and text rendering definitions.
Added some minor missing definitions.

Added more stuff to support head examples.
Last group of definitions to support head example.