RDoc tries to parse `.bundle` files

[tenderlove]

When I install a gem, RDoc tries to parse .bundle files and complains that it can't convert the binary file to UTF-8. I expect RDoc to ignore these files.

Here are repro steps:

[aaron@localhost elefaint (master)]$ gem install pg
Fetching: pg-0.14.1.gem (100%)
Building native extensions.  This could take a while...
Successfully installed pg-0.14.1
invalid options: -f fivefish
(invalid options are ignored)
Parsing documentation for pg-0.14.1
unable to convert "\xCF" from ASCII-8BIT to UTF-8 for lib/pg_ext.bundle, skipping
Installing ri documentation for pg-0.14.1
1 gem installed
[aaron@localhost elefaint (master)]$ rdoc --version
rdoc 4.0.0
[aaron@localhost elefaint (master)]$ ruby -v
ruby 2.1.0dev (2013-02-28 trunk 39535) [x86_64-darwin12.2.1]
[aaron@localhost elefaint (master)]$ 

[zakdances]

+1, I'm experiencing this as well when trying to update the cocoapods gem

[klausmeyer]

+1

[drbrain]

See also rails/rails#9779

[Azolo]

Similar to #190 & #189

Looks like it's just a problem parsing binary files in general.

[drbrain]

Duplicate of #189