MSVC: allow linking with the cURL library

Teach the clink.pl script that -lcurl is a request to link with the
cURL library, and drop NO_CURL from config.mak.uname for the MSVC
platform.

Signed-off-by: Marat Radchenko <marat@slonopotamus.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

compat/vcbuild/scripts/clink.pl

@@ -33,6 +33,8 @@ while (@ARGV) {
 		push(@args, "libeay32.lib");
 	} elsif ("$arg" eq "-lssl") {
 		push(@args, "ssleay32.lib");
+	} elsif ("$arg" eq "-lcurl") {
+		push(@args, "libcurl.lib");
 	} elsif ("$arg" =~ /^-L/ && "$arg" ne "-LTCG") {
 		$arg =~ s/^-L/-LIBPATH:/;
 		push(@args, $arg);

config.mak.uname

@@ -345,7 +345,6 @@ ifeq ($(uname_S),Windows)
 	UNRELIABLE_FSTAT = UnfortunatelyYes
 	OBJECT_CREATION_USES_RENAMES = UnfortunatelyNeedsTo
 	NO_REGEX = YesPlease
-	NO_CURL = YesPlease
 	NO_GETTEXT = YesPlease
 	NO_PYTHON = YesPlease
 	BLK_SHA1 = YesPlease