Update lang/perl5.12 to version 5.12.4_5
Update lang/perl5.14 to version 5.14.2_3
Update lang/perl5.16 to version 5.16.2_1
Update databases/p5-DBI to version 1.624
Tweak devel/bison version 2.7,1
Tweak shells/bash version 4.2.42
Tweak devel/libsigc++20 version 2.2.10