Adding patch to avoid overwriting build-environment.

Signed-off-by: Daniel Baumann <daniel@debian.org>

debian/patches/01-build.patch

@@ -0,0 +1,19 @@
+Author: Daniel Baumann <daniel.baumann@progress-technologies.net>
+Description: Avoid overwriting build-environment.
+
+diff -Naurp clzip.orig/configure clzip/configure
+--- clzip.orig/configure	2012-06-27 16:02:18.168455662 +0200
++++ clzip/configure	2012-06-29 04:37:06.563567740 +0200
+@@ -23,9 +23,9 @@ datarootdir='$(prefix)/share'
+ infodir='$(datarootdir)/info'
+ mandir='$(datarootdir)/man'
+ CC=
+-CPPFLAGS=
+-CFLAGS='-Wall -W -O2'
+-LDFLAGS=
++#CPPFLAGS=
++#CFLAGS='-Wall -W -O2'
++#LDFLAGS=
+ 
+ # Loop over all args
+ while [ -n "$1" ] ; do

debian/patches/series

@@ -0,0 +1 @@
+01-build.patch