Builder.pm: Fix regex in strip-pod().
Builder.pm: Fix regex in strip-pod().

Regex was using Perl5 style syntax.

jonathanstowe/panda,nbrown/panda,hoelzro/panda,TimToady/panda,will-crawford/panda,nbrown/panda,tadzik/panda,sjn/panda,stmuk/panda,stmuk/panda,skaji/panda,perlpilot/panda,timo/panda,shoichikaji/panda,tadzik/panda,sjn/panda,laben/panda,dwarring/panda,moznion/panda,perlpilot/panda,moznion/panda,hoelzro/panda,dwarring/panda,laben/panda,shoichikaji/panda,masak/panda,dwarring/panda,will-crawford/panda,niner/panda,masak/panda,hoelzro/panda,tadzik/panda,raydiak/panda,sjn/panda,timo/panda,raydiak/panda,skaji/panda,cygx/panda,TimToady/panda,jonathanstowe/panda,cygx/panda,niner/panda