Perlbrew

Perlbrew Release 0.52

perlbrew 0.52 is released on 2012-10-04T21:30:40+0200 with the follow fixes

• userelocatableinc is no longer default. Meanwhile PERLBREW_CONFIGURE_FLAGS can still be used.
• Fix GH #197 again. Also make sure perlbrew-unrelated PERL5LIB values are preserved.
• Fix an issue that MANPATH contains unwanted values even after switch/use/off.