Tabs to spaces
Remove trailing whitespace
Use ctest instead of custom target.
Install examples if built.
Add custom 'check' target that depends on the test_runner target for backwards compatibility.
Fix docs of MPEG::File::ID3v(1|2)Tag for inexistent tag

Since 37e2d629, the ID3v1 and ID3v2 tags are always created at the end
of MPEG::File::read. So contrary to what the documentation said, a null
pointer is never returned.

To check if a tag contains data, refer to isEmpty() in the
documentation.
Don't duplicate from ID3v1 to ID3v2 when saving only ID3v2

When saving only v2 with stripOthers (which means stripping v1), the
data from v1 would still be duplicated to v2. Likewise for the other way
around.

This is not the expected outcome when e.g. a frame was removed in v2,
because it would be added again on save from the v1 data. The test shows
that.

This changes save to only duplicate the data when the other tag type
will not be stripped.
Use '0' here instead of 'NULL'

0 is used throughout the rest of the TagLib source, and generally
preferred in C++:

http://www2.research.att.com/~bs/bs_faq2.html#null
MPC v8 audio properties
Refactoring of the Musepack SV8 properties code
More Musepack tests
Merge branch 'mpc_sv8'
Merge remote-tracking branch 'robinst/dont-copy-from-id3v1-when-only-saving-id3v2'
Merge remote-tracking branch 'kensington/master'
Revert "Install examples if built."

This reverts commit 52e96e48c521ad55a7a83fd87d138513d48e6ed9.
Merge remote-tracking branch 'robinst/mpeg-file-id3vxtag-docs-inexistent-tags'
Merge remote-tracking branch 'poiru/master'
Cast to long
Changelog for 1.8 beta
- Disambiguate uint and ushort references