speexdsp build for core

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11989 d0543943-73ff-0310-b7d9-9358b9ac24b2

Makefile.am

@@ -143,6 +143,7 @@ CORE_CFLAGS    += `$(switch_srcdir)/libs/apr-util/apu-1-config --includes`
 CORE_CFLAGS    += -I$(switch_srcdir)/libs/stfu
 CORE_CFLAGS    += -I$(switch_srcdir)/libs/sqlite
 CORE_CFLAGS    += -I$(switch_srcdir)/libs/pcre
+CORE_CFLAGS    += -I$(switch_srcdir)/libs/speex/include
 CORE_CFLAGS    += -I$(switch_srcdir)/libs/srtp/include
 CORE_CFLAGS    += -I$(switch_srcdir)/libs/srtp/crypto/include
 CORE_CFLAGS    += $(RESAMPLE_CFLAGS)