Update changelog; allow for versioned DSOs.
Work around compiler failure to find boost::hash.
Fix typos.
Move master .so symlinks to -devel package. Relates #836.
Simplify soversion by giving nightlies an soversion.

Assign an soversion of "0" to nightly/development builds. This simplifies
the logic for building .rpm and .deb packages. Closes #836.
Make libTAU.so symlink for -dev package.
Fix wording.
Fix libTAU symlink.
Note that mpi4py doesn't work with OpenMPI 1.8.
Don't spam cerr; use IMP log macros instead.
doxygen does not seem to understand markdown code blocks.
Link to the homebrew web page, not the github page.
Fix typo.
Skip unnecessary sort.

We only use the first element of the sorted list,
so getting the minimum element instead is sufficient.
Work around a segfault in sort() on OS X 10.10.
adding test of linking with nested rigid bodies
Load non-rigid nested rigid bodies correctly.

Relates #845.
Use IMP info if we don't have useful RMF info.

When linking to an RMF file, if we haven't read a frame yet
we can only see the static values, and for nonrigid members
that are also rigid bodies, there are no such values for
translation/rotation, so they are not read in correctly.
But IMP knows that the member is nonrigid and is a rigid
body, so use that information.

Closes #845.
Use correct class.
Fix class name.