[PATCHv2] gitweb: Git config keys are case insensitive, make config search too

[Jakub Narebski <jnareb@gmail.com>]

"git config -z -l" that gitweb uses in git_parse_project_config() to
populate %config hash returns section and key names of config
variables in lowercase (they are case insensitive).  When checking
%config in git_get_project_config() we have to take it into account.

Gitweb does not (yet?) use git config variables with subsection, so we
can simply lowercase $key in git_get_project_config (only subsection
names are case sensitive).

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
I think it is a resend, but I haven't found first version.

The patch is unchanged, but commit message got improved.
It is not as much bugfix as hardening (against user e.g. adding
new overridable feature via gitweb config file).

 gitweb/gitweb.perl |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 1070805..90b5a73 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -2526,6 +2526,7 @@ sub git_get_project_config {
 
 	# key sanity check
 	return unless ($key);
+	$key = lc($key); # assuming there is no subsection
 	$key =~ s/^gitweb\.//;
 	return if ($key =~ m/\W/);