K 10
svn:author
V 6
jbeich
K 8
svn:date
V 27
2017-08-07T18:22:51.497046Z
K 7
svn:log
V 279
www/firefox: update to 55.0

This is the last release to support RUST=off. Later versions
remove non-Rust codepaths e.g., via encoding_rs.

Changes:	https://www.mozilla.org/firefox/55.0/releasenotes/
PR:		216541 219963
Security:	555b244e-6b20-4546-851f-d8eb7d6c1ffa
MFH:		2017Q3

END