UPGRADE: osdep for TPS definition
UPGRADE: est pak - fix windows warn level
FIX: unset wp->route when building without auth.

Also harden APIs for wp->route being null.
REFACTOR: Change "Can't" to "Cannot"
CLEAN
REGEN: doc and projects for 3.3.4
FIX: transmission of large files over slow connections

Fixes sending large files, using chunking over slow connections.
Grow buffer to accommodate the chunk header if required.
DOC: Update doc for websWriteBlock

Cleanup comments and boost unit test duration.
CLEAN:
FIX: test for failure of websFlush when writing.
DOC: Update changelog
Merge branch 'dev'