Avoid sending the pragma no cache header when fetching files with libcurl.
Avoid sending the pragma no cache header when fetching files with libcurl.

Bug:            https://trac.macports.org/ticket/8669
Submitted by:   josh_root@, blb@
Reviewed by:
Approved by:
Obtained from:

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@18987 d073be05-634f-4543-b044-5fe20cf6d1d6

macports/macports-base,macports/macports-base,danchr/macports-base,neverpanic/macports-base,danchr/macports-base,neverpanic/macports-base