Build system cleanup, initial piece of automatic build test system (thanks xachen)

minor mod- I kept build.sh in the root dir for now.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@560 d0543943-73ff-0310-b7d9-9358b9ac24b2

build/modmake.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+pwd=$1
+shift
+mod=$1
+shift
+
+make=`which gmake`
+
+if [ -z $make ] ; then
+    make=`which make`
+fi
+
+end=`echo $mod | sed "s/^.*\///g"`
+if [ -z $end ] ; then
+    end=$mod
+fi
+
+if [ -f $mod/Makefile ] ; then
+    MODNAME=$end $make -C $mod $@
+else 
+    MODNAME=$end $make -f $pwd/generic_mod.mk -C $mod $@
+fi
+