express: Modified autogen.sh to enable building from any directory.

Summary: Currently we can build from only src directory. So modified autogen.sh to be able to build from other directories as well.

Reviewers: devilhorns

Differential Revision: https://phab.enlightenment.org/D1995

autogen.sh

@@ -1,8 +1,12 @@
 #!/bin/sh
 
+test -n "$srcdir" || srcdir=`dirname "$0"`
+test -n "$srcdir" || srcdir=.
+  (
+    cd "$srcdir" &&
+      (
         rm -rf autom4te.cache
         rm -f aclocal.m4 ltmain.sh
-
         touch README
         touch ABOUT-NLS
 
@@ -12,7 +16,9 @@ echo "Running autoconf..." ; autoconf || exit 1
         echo "Running autoheader..." ; autoheader || exit 1
         echo "Running libtoolize..." ; (libtoolize --copy --automake || glibtoolize --automake) || exit 1
         echo "Running automake..." ; automake --add-missing --copy --gnu || exit 1
+     )
+  )
 
 if [ -z "$NOCONFIGURE" ]; then
-	./configure "$@"
+	$srcdir/configure "$@"
 fi