git-svn: expand handling of From: and Signed-off-by:

[Andy Whitcroft <apw@shadowen.org>]

The current parsing for From: and Signed-off-by: lines handles fully
specified names:

	From: Full Name <email@address>

Expand this to include the raw email addresses and straight "names":

	From: email@address       -> email <email@address>
	From: Full Name           -> Full Name <unknown>

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
---
 git-svn.perl |   17 +++++++++++++----
 1 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/git-svn.perl b/git-svn.perl
index 54d7844..058f8e9 100755
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -2363,11 +2363,20 @@ sub make_log_entry {
 
 	my ($commit_name, $commit_email) = ($name, $email);
 	if ($_use_log_author) {
-		if ($log_entry{log} =~ /From:\s+(.*?)\s+<(.*)>\s*\n/) {
-			($name, $email) = ($1, $2);
-		} elsif ($log_entry{log} =~
-		                      /Signed-off-by:\s+(.*?)\s+<(.*)>\s*\n/) {
+		my $name_field;
+		if ($log_entry{log} =~ /From:\s+(.*\S)\s*\n/i) {
+			$name_field = $1;
+		} elsif ($log_entry{log} =~ /Signed-off-by:\s+(.*\S)\s*\n/i) {
+			$name_field = $1;
+		}
+		if (!defined $name_field) {
+			#
+		} elsif ($name_field =~ /(.*?)\s+<(.*)>/) {
 			($name, $email) = ($1, $2);
+        	} elsif ($name_field =~ /(.*)@/) {
+			($name, $email) = ($1, $name_field);
+		} else {
+			($name, $email) = ($name_field, 'unknown');
 		}
 	}
 	if (defined $headrev && $self->use_svm_props) {