Add mercurial entries for at least three of the commits, 7 in total have (SEC) markings

For three at least there seem to be need of a CVE, in total there 7
changesets marked with (SEC) wich might be potentially needing a
identifier.

https://www.mercurial-scm.org/repo/hg/rev/9c5ced5276d6
https://www.mercurial-scm.org/repo/hg/rev/59837a16896d
https://www.mercurial-scm.org/repo/hg/rev/7f22ef3c0ee7
https://www.mercurial-scm.org/repo/hg/rev/0b208c13781c
https://www.mercurial-scm.org/repo/hg/rev/faa924469635
https://www.mercurial-scm.org/repo/hg/rev/1acfc35d478c
https://www.mercurial-scm.org/repo/hg/rev/90a274965de7