(maint) Update debian packaging to build with correct dependencies

We've removed log4cxx and re2 as dependencies for cfacter, replaced with
boost.log and boost.regex. This requires those obsolete pacakges to be
pulled out of the control file, and the correct boost package to be
added.
(maint) add libdl explicitly

Prior to this commit, building cfacter would result in the following
error:
```
../libfacter.so.0.2.0: undefined reference to `dlopen'
../libfacter.so.0.2.0: undefined reference to `dlclose'
../libfacter.so.0.2.0: undefined reference to `dlsym'
collect2: error: ld returned 1 exit status
```
which indicates we are not linking that library correctly, if at
all.
Merge pull request #175 from melissaanne/maint/master/add-boost

(maint) Update debian packaging to build with correct dependencies
(maint) Update rpm packaging to use updated boost

We've changed how we build boost. We are now building both pl-libboost
as well as pl-libboost-devel. This will allow us to unstall the minimum
number of files on a production system.