gnu-config: Use perl from the environment, not a hardcoded path

Using the hardcoded perl binary can cause conflict between the files in the native
sysroot and those of the build system perl. By using perl from the environment
we can at least ensure a consistent perl environment.

Patches taken from OE.dev commits:
be21179c5321bd0afb9221f020ac12ad75c86a3b gnu-config: use /usr/bin/env perl instead of /usr/bin/perl in gnu-configize.in
edcdefbf6e0675c1bcc1fc4f464f654223380e50 gnu-config: update also bindir change to replace /usr/bin/env instead of /usr/bin/perl

(From OE-Core rev: a508e7c03840efcd5877f4185e8f024cedb9453f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gnu-config/gnu-config/gnu-configize.in

@@ -1,4 +1,4 @@
-#! /usr/bin/perl -w
+#! /usr/bin/env perl
 # -*- perl -*-
 
 eval 'case $# in 0) exec /usr/bin/perl -S "$0";; *) exec /usr/bin/perl -S "$0" "$@";; esac'

meta/recipes-devtools/gnu-config/gnu-config_20080123.bb

@@ -8,7 +8,7 @@ INHIBIT_DEFAULT_DEPS = "1"
 
 FIXEDSRCDATE = "${@bb.data.getVar('FILE', d, 1).split('_')[-1].split('.')[0]}"
 PV = "0.1+cvs${FIXEDSRCDATE}"
-PR = "r1"
+PR = "r2"
 
 SRC_URI = "cvs://anonymous@cvs.sv.gnu.org/cvsroot/config;module=config;method=pserver;date=${FIXEDSRCDATE} \
 	   file://config-guess-uclibc.patch \
@@ -27,7 +27,7 @@ do_install () {
 		    -e 's,@autom4te_perllibdir@,${datadir}/autoconf,g' > ${D}${bindir}/gnu-configize
 	# In the native case we want the system perl as perl-native can't have built yet
 	if [ "${BUILD_ARCH}" != "${TARGET_ARCH}" ]; then
-		sed -i -e 's,/usr/bin/perl,${bindir}/perl,g' ${D}${bindir}/gnu-configize
+		sed -i -e 's,/usr/bin/env,${bindir}/env,g' ${D}${bindir}/gnu-configize
 	fi
 	chmod 755 ${D}${bindir}/gnu-configize
 	install -m 0644 config.guess config.sub ${D}${datadir}/gnu-config/