Refreshing build.patch.

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

debian/patches/0001-build.patch

@@ -4,10 +4,10 @@ Description: Avoid overwriting build-environment.
 diff -Naurp pdlzip.orig/configure pdlzip/configure
 --- pdlzip.orig/configure
 +++ pdlzip/configure
-@@ -24,9 +24,9 @@ infodir='$(datadir)/info'
- mandir='$(datadir)/man'
- sysconfdir='$(prefix)/etc'
- CC=
+@@ -23,9 +23,9 @@ datarootdir='$(prefix)/share'
+ infodir='$(datarootdir)/info'
+ mandir='$(datarootdir)/man'
+ CC=gcc
 -CPPFLAGS=
 -CFLAGS='-Wall -W -O2'
 -LDFLAGS=
@@ -15,5 +15,5 @@ diff -Naurp pdlzip.orig/configure pdlzip/configure
 +#CFLAGS='-Wall -W -O2'
 +#LDFLAGS=
  
- # Loop over all args
- while [ -n "$1" ] ; do
+ # checking whether we are using GNU C.
+ if [ ! -x /bin/gcc ] &&