Autogen Tweak

1. Remove redundant things from autogen.sh.
2. export the warnings variable to autoreconf sees it.
3. Simplify linking the configure hook script.

autogen.sh

@@ -1,44 +1,20 @@
 #!/bin/sh
 #
 # Create configure and makefile stuff...
-#
-
-set -e
-
-# if get an error about libtool not setup
-# " error: Libtool library used but 'LIBTOOL' is undefined
-#     The usual way to define 'LIBTOOL' is to add 'LT_INIT' "
-# manually call libtoolize or glibtoolize before running this again
-# (g)libtoolize
-
-# if you get an error about config.rpath missing, some buggy automake versions
-# then touch the missing file (may need to make config/ first).
-# touch config/config.rpath
-# touch config.rpath
-
-if test ! -d build-aux; then
-  echo "Making missing build-aux directory."
-  mkdir -p build-aux
-fi
-
-if test ! -f build-aux/config.rpath; then
-  echo "Touching missing build-aux/config.rpath file."
-  touch build-aux/config.rpath
-fi
 
 # Git hooks should come before autoreconf.
-if test -d .git; then
-  if ! test -d .git/hooks; then
-    mkdir .git/hooks
-  fi
-  ln -s -f ../../scripts/pre-commit.sh .git/hooks/pre-commit
+if test -d .git
+then
+  mkdir -p .git/hooks && ln -sf ../../scripts/pre-commit.sh .git/hooks/pre-commit
 fi
 
 # If this is a source checkout then call autoreconf with error as well
-if test -e .git; then
+if test -e .git
+then
   WARNINGS="all,error"
 else
   WARNINGS="all"
 fi
+export WARNINGS
 
-autoreconf --install --force --verbose 
+autoreconf -ivf