Add support for building and timing perl5 from component checkouts

Author: japhb

README

@@ -23,10 +23,10 @@ compilers is as follows:
 
     # First step chews network bandwidth to mirror repos; see next section
     ./bench setup
-    ./bench extract nqp niecza rakudo
-    ./bench build   nqp/2013.05 rakudo/2013.05 niecza/v24
-    ./bench time    nqp/2013.05 rakudo/2013.05 niecza/v24
-    ./bench compare nqp/2013.05 rakudo/2013.05 niecza/v24
+    ./bench extract perl5/v5.18.0 nqp/2013.05 rakudo/2013.05 niecza/v24
+    ./bench build   perl5/v5.18.0 nqp/2013.05 rakudo/2013.05 niecza/v24
+    ./bench time    perl5/v5.18.0 nqp/2013.05 rakudo/2013.05 niecza/v24
+    ./bench compare perl5/v5.18.0 nqp/2013.05 rakudo/2013.05 niecza/v24
 
 
 NETWORK TRAFFIC

compilers.pl

@@ -6,10 +6,9 @@
             language  => 'Perl 5',
             compiler  => 'perl5',
             vm        => 'perl5',
-            dir       => 'BENCH',
-            f_run     => [qw( VM           )],
-            e_run     => [qw( VM -E        )],
-            show_ver  => [qw( VM -E say+$] )],
+            f_run     => [qw( install/bin/perl           )],
+            e_run     => [qw( install/bin/perl -E        )],
+            show_ver  => [qw( install/bin/perl -E say+$] )],
            },
            {
             name      => 'p5.pl',

components.json

@@ -44,7 +44,15 @@
     },
     "perl5": {
         "name":         "perl5",
-        "repo_url":     "git://perl5.git.perl.org/perl.git"
+        "repo_url":     "git://perl5.git.perl.org/perl.git",
+        "build_steps":  [
+            [ "make", "clean" ],
+            [ "git", "clean", "-dxf" ],
+            [ "rm", "-rf", "install" ],
+            "./Configure -des -Dprefix=`pwd`/install",
+            [ "make" ],
+            [ "make", "install" ],
+        ]
     },
     "perlito": {
         "name":         "perlito",