eclass: Update mysql dependency in emboss-r2

eclass: Update mysql dependency in emboss-r2

Closes: https://bugs.gentoo.org/show_bug.cgi?id=677592
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666016
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666018
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666020
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666022
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666024
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666026
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666028
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666030
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666032
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666034
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666036
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666038
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666040
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666042
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666044
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666046
Closes: https://bugs.gentoo.org/show_bug.cgi?id=666048
Signed-off-by: Brian Evans <grknight@gentoo.org>