[patch] respect env var settings for CC/AR/RANLIB

[Mike Frysinger]

it's nice when a build system respects the env settings of CC/AR/RANLIB so 
here's a minor patch to Configure to do just that
-mike

--- Configure
+++ Configure
@@ -949,7 +949,7 @@
 print "IsMK1MF=$IsMK1MF\n";
 
 my @fields = split(/\s*:\s*/,$table{$target} . ":" x 30 , -1);
-my $cc = $fields[$idx_cc];
+my $cc = $ENV{'CC'} || $fields[$idx_cc];
 my $cflags = $fields[$idx_cflags];
 my $unistd = $fields[$idx_unistd];
 my $thread_cflag = $fields[$idx_thread_cflag];
@@ -973,8 +973,9 @@ my $shared_target = $fields[$idx_shared_
 my $shared_cflag = $fields[$idx_shared_cflag];
 my $shared_ldflag = $fields[$idx_shared_ldflag];
 my $shared_extension = $fields[$idx_shared_extension];
-my $ranlib = $fields[$idx_ranlib];
+my $ranlib = $ENV{'RANLIB'} || $fields[$idx_ranlib];
 my $arflags = $fields[$idx_arflags];
+my $ar = $ENV{'AR'} || "ar";
 
 my $no_shared_warn=0;
 my $no_user_cflags=0;
@@ -1329,6 +1330,7 @@ while (<IN>)
 	s/^PROCESSOR=.*/PROCESSOR= $processor/;
 	s/^RANLIB=.*/RANLIB= $ranlib/;
 	s/^ARFLAGS=.*/ARFLAGS= $arflags/;
+	s/^AR=ar /AR= $ar /;
 	s/^PERL=.*/PERL= $perl/;
 	s/^KRB5_INCLUDES=.*/KRB5_INCLUDES=$withargs{"krb5-include"}/;
 	s/^LIBKRB5=.*/LIBKRB5=$withargs{"krb5-lib"}/;

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