RFU: sqlite 3.6.21-1

[Warren Young]

New upstream release:

wget -e robots=off --cut-dirs=2 -np -nH -A'*3.6.21*' -r \
        http://etr-usa.com/cygwin/sqlite3/
This is the first version packaged explicitly for 1.7.  Previous 3.6.2 
was copied over from 1.5 repo.