Description of problem:

boost169 is missing the 'backtrace' boost library. this is present in the headers already, so it creates a confusing situation where a package can be included but fail to link.

Version-Release number of selected component (if applicable):
1.69.0-2

How reproducible:
Always, no reproduction needed

Steps to Reproduce:
1. Install the relevant boost169-stacktrace package
2. ls -l /usr/lib64/libboost_stacktrace*

Actual results:
no backtrace library is present.

Expected results:
the libboost_stacktrace_backtrace library should be part of the package contents, as per a standard boost169 build.

Additional info:
n/a