Adding patch to not overwrite buildflags.

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 plzip.orig/configure plzip/configure
+--- plzip.orig/configure	2012-06-27 16:06:34.898944777 +0200
++++ plzip/configure	2012-06-30 12:47:21.829197850 +0200
+@@ -23,9 +23,9 @@ datarootdir='$(prefix)/share'
+ infodir='$(datarootdir)/info'
+ mandir='$(datarootdir)/man'
+ CXX=
+-CPPFLAGS=
+-CXXFLAGS='-Wall -W -O2'
+-LDFLAGS=
++#CPPFLAGS=
++#CXXFLAGS='-Wall -W -O2'
++#LDFLAGS=
+ 
+ # Loop over all args
+ while [ -n "$1" ] ; do

debian/patches/series

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