Clean up build system and update copyright information.

git-svn-id: svn://svn.zoy.org/elk/trunk@274 55e467fa-43c5-0310-a8a2-de718669efc6

test/Makefile.am

@@ -0,0 +1,6 @@
+# $Id$
+
+EXTRA_DIST = check-build
+
+TESTS = check-build
+

test/check-build

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+ret=0
+
+#
+# Check that we have no tabs or trailing spaces in the source code
+#
+failure=0
+for dir in lib/misc lib/unix lib/xlib lib/xwidgets lib/xwidgets/motif \
+           lib/xwidgets/xaw src; do
+  pushd ../$dir >/dev/null
+  for x in $(make echo-sources); do
+    if grep '[[:space:]]$' "$x" >/dev/null 2>&1; then
+      echo "error: $dir/$x contains trailing spaces"
+      failure=1
+    fi
+    if grep '	' "$x" >/dev/null 2>&1; then
+      echo "error: $dir/$x contains tabs"
+      failure=1
+    fi
+  done
+  popd >/dev/null
+done
+if test "$failure" != "0"; then
+  ret=1
+else
+  echo "0 errors in source code"
+fi
+
+if test "$ret" != "0"; then
+  exit 1
+fi
+
+exit 0
+