FreeBSD 10.0 jvm crashes constantly, pcid disable fixes it.

[Vick Khera]

In attempting to build a customized set of packages for my FreeBSD
10.0 systems, I discovered that there are others having JVM crashes of
various sorts as well.

I found this post
http://lists.freebsd.org/pipermail/freebsd-java/2014-February/010582.html
which offered the solution that did fix my crashing, so I wanted to
add my voice to the chorus of people for whom it worked.

Specifically, I am using poudriere to build the openjdk7 port. The
bootstrap jdk6 kept dumping core until I disabled the
vm.pmap.pcid_enabled setting.