libc/eglibc: Add option that allows for getting svn over http://

Instead of getting eglibc over standard svn://svn.eglibc.org
Add an option that allows the user to get source from
http://www.eglibc.org/svn

This is useful if you are behind a firewall or proxy.
If you are behind a proxy, don't forget to configure
${HOME}/.subversion/servers

In the [global] section setup your proxy configuration.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
[yann.morin.1998@anciens.enib.fr: removed useless 'default n']
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

 Original patch from Gentoo:

 gentoo/src/patchsets/binutils/2.19/76_all_use-new-ld-dtags.patch

 diff -durN binutils-2.19.orig/ld/ldmain.c binutils-2.19/ld/ldmain.c

 --- binutils-2.19.orig/ld/ldmain.c	2008-11-23 16:54:42.000000000 +0100

 +++ binutils-2.19/ld/ldmain.c	2008-11-23 16:56:16.000000000 +0100

 @@ -262,6 +262,7 @@

    link_info.allow_undefined_version = TRUE;

    link_info.keep_memory = TRUE;

 +  link_info.new_dtags = TRUE;

    link_info.combreloc = TRUE;

    link_info.strip_discarded = TRUE;

    link_info.emit_hash = TRUE;