ESL-86: esl automake of at least the core parts
Completely unbundle pcre

FS-353

Signed-off-by: Travis Cross <tc@traviscross.com>
Support change to system libpcre in debian
Merge in change to require system libpcre

libpcre is now a hard system dependency for building and running
FreeSWITCH.

FS-353
Completely unbundle speex

FS-353

Signed-off-by: Travis Cross <tc@traviscross.com>
Support change to system libspeex in debian
Merge in change to require system libspeex

libspeex and libspeexdsp are now hard system dependencies for
building and running FreeSWITCH.

FS-353