find-copyrights.pl: updates for git

And minor whitespace cleanup.

contrib/dist/find-copyrights.pl

@@ -15,13 +15,8 @@ my $copyrights;
 
 # Ensure that we're in the top of an SVN or hg directory.
 
-my $good = 0;
-$good = 1
-    if (-d ".hg");
-$good = 1
-    if (-d ".svn" && -f "README.WINDOWS.txt" && -f "VERSION");
 die "Must be in root of OMPI tree"
-    if (!$good);
+    if (! -d ".git");
 
 # Find all interesting files (skip the top-level LICENSE file)
 my @files;
@@ -32,7 +27,7 @@ my @files;
                 !($_ eq "LICENSE" && $File::Find::dir eq ".") &&
                 $_ !~ /~$/ && $_ !~ /\.bak$/ && $_ !~ /\.orig$/ &&
                 -f $_ && ! -l $_ &&
-                $File::Find::dir !~ /\.svn/ &&
+                $File::Find::dir !~ /\.git/ &&
                 $File::Find::dir !~ /\.libs/ &&
                 $File::Find::dir !~ /\.deps/);
     },