Log Message:
Change MOZILLA master sites difinitions, related to PR 37379.

There are three types Mozilla mirrors.
(http://www.mozilla.org/mirroring.html)
 * mozilla-current
        contains only the current version of Firefox and Thunderbird
 * mozilla-release
        contains Firefox, Thunderbird, and Sunbird releases
 * mozilla-all
        complete archive

Define following variables for mozilla master sites:
        MASTER_SITE_MOZILLA_ALL = mozilla-all
        MASTER_SITE_MOZILLA     = mozilla-release
and change some packages to use appropriate variable.

Update contents of MASTER_SITE_MOZILLA with master and primary mirrors
taken from http://www.mozilla.org/mirrors.html and add some sample definitions.