Full run using a dev build of berrybrew.

> assoc .pl
.pl=Perl_program_file

> ftype Perl_program_file
Perl_program_file=C:\Strawberry\perl\bin\perl.exe %1 %*

> build\berrybrew list
        5.16.3_64
        5.10.1_32

> build\berrybrew switch 5.16.3_64
Switched to Perl version 5.16.3_64...

> build\berrrybrew associate set
berrybrew is now managing the Perl file association

> assoc .pl
.pl=berrybrewPerl

> ftype berrybrewPerl
berrybrewPerl=C:\berrybrew\5.16.3_64\perl\bin\perl.exe %1 %*

> t\data\assoc.pl
Hello, world!
C:\berrybrew\5.16.3_64\perl\bin\perl.exe

> build\berrybrew.exe switch 5.10.1_32
Switched to Perl version 5.10.1_32...

> ftype berrybrewPerl
berrybrewPerl=C:\berrybrew\5.10.1_32\perl\bin\perl.exe %1 %*

> t\data\assoc.pl
Hello, world!
C:\berrybrew\5.10.1_32\perl\bin\perl.exe

> build\berrybrew associate unset
Set Perl file association back to default

> assoc .pl
.pl=Perl_program_file

> ftype Perl_program_file
Perl_program_file=C:\Strawberry\perl\bin\perl.exe %1 %*
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