Intermediate commit for building wget with openssl. This is a working version, part of incremental commits. For now, we're still using wget-1.15-gs (that always requires --no-check-certificate if running wget), which now uses a wgetrc conf file to turn off the check-certificate default of wget, since without this, wget fails getting https pages that don't yet have a valid security certificate. This commit introduces the template wgetrc-gs.in file, which contains a flag set to not require certificate checks, is copied to gs2build/OS as wgetrc. The WGETRC env var is set in setup.bash to point to the wgetrc file so wget runs smoothly against https urls.
