Let git-svnimport's author file use same syntax as git-cvsimport's

git-cvsimport uses a username => Full Name <email@addr.es> mapping
file with this syntax:

  kha=Karl Hasselström <kha@treskal.com>

Since there is no reason to use another format for git-svnimport, use
the same format.

Signed-off-by: Karl Hasselström <kha@treskal.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Documentation/git-svnimport.txt

@@ -75,9 +75,9 @@ When importing incrementally, you might need to edit the .git/svn2git file.
 -A <author_file>::
 	Read a file with lines on the form
 
-	  username User's Full Name <email@addres.org>
+	  username = User's Full Name <email@addr.es>
 
-	and use "User's Full Name <email@addres.org>" as the GIT
+	and use "User's Full Name <email@addr.es>" as the GIT
 	author and committer for Subversion commits made by
 	"username". If encountering a commit made by a user not in the
 	list, abort.

git-svnimport.perl

@@ -74,7 +74,7 @@ END
 	open(my $authors,$opt_A);
 	while(<$authors>) {
 		chomp;
-		next unless /^(\S+)\s+(.+?)\s+<(\S+)>$/;
+		next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
 		(my $user,my $name,my $email) = ($1,$2,$3);
 		$users{$user} = [$name,$email];
 	}