Disabled omission of frame pointers in debug builds in stout.
Disabled omission of frame pointers in debug builds in stout.

This patch prevents the compiler from omitting frame pointers for
debug builds which can lead to a better debugging or profiling
experience.

Since having this flag turned on can disable certain optimizations we
do not enable it in non-debug builds. This can lead to minor
deviations in runtime behavior when combing release and debug flags
(e.g., when combining `--enable-debug` with `--enable-optimize`, or
with the cmake build type `RelWithDebInfo`), but still should give the
best possible build for pure release builds, and allow a reasonable
developer experience when debugging/profiling.

Review: https://reviews.apache.org/r/67109/

chhsia0/mesos,kaysoky/mesos,jpeach/mesos,gsantovena/mesos,Gilbert88/mesos,gsantovena/mesos,reneploetz/mesos,kaysoky/mesos,Gilbert88/mesos,andschwa/mesos,chhsia0/mesos,Gilbert88/mesos,gsantovena/mesos,jpeach/mesos,reneploetz/mesos,jpeach/mesos,andschwa/mesos,reneploetz/mesos,dforsyth/mesos,reneploetz/mesos,chhsia0/mesos,jpeach/mesos,andschwa/mesos,dforsyth/mesos,kaysoky/mesos,Gilbert88/mesos,abudnik/mesos,andschwa/mesos,abudnik/mesos,reneploetz/mesos,andschwa/mesos,dforsyth/mesos,abudnik/mesos,kaysoky/mesos,gsantovena/mesos,gsantovena/mesos,andschwa/mesos,abudnik/mesos,dforsyth/mesos,jpeach/mesos,jpeach/mesos,reneploetz/mesos,dforsyth/mesos,jpeach/mesos,dforsyth/mesos,abudnik/mesos,chhsia0/mesos,kaysoky/mesos,gsantovena/mesos,Gilbert88/mesos,chhsia0/mesos,reneploetz/mesos,kaysoky/mesos,abudnik/mesos,gsantovena/mesos,Gilbert88/mesos,kaysoky/mesos,andschwa/mesos,dforsyth/mesos,Gilbert88/mesos,chhsia0/mesos,abudnik/mesos,chhsia0/mesos