Removed duplication from autoconf scripts by moving lots of code into a pion-config.m4 include file
Removed duplication from autoconf scripts by moving lots of code into a pion-config.m4 include file

acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core