removed unneeded typedef of function pointer, replaced with manual page for function pointer form

Hg-commit: fd77d06a99d62a828458b49ce06b6519a336ace5

Commit after merge.

Hg-commit: a128a87f5736ccbab37df5d559616f8376f7026e

reorg of src/sys directory
directories that define objects now in the classes subdirectory
rename several confusing name directories

Hg-commit: b2612422c63ac4afe82112892d9efda808f3d601