Remove default obfs3 bridges #4 and #5, and scramblesuit bridge #1.

These bridges were removed because:

  1. They have never provided their bridge descriptors for metrics. See
     #13504: https://bugs.torproject.org/13504

  2. They are either unreachable or unreliable.

      2.a. The two obfs3 bridges are unreachable:
Oct 21 20:25:53.000 [warn] Proxy Client: unable to connect to 209.141.36.236:45496 ("TTL expired")
Oct 21 20:25:53.000 [warn] Proxy Client: unable to connect to 208.79.90.242:35658 ("TTL expired")

      2.b. The scramblesuit bridge is rejecting connections:
Oct 21 20:26:57.000 [warn] Proxy Client: unable to connect to 188.40.121.112:39707 ("Connection refused")

 * REMOVE default bridges obfs3.4, obfs3.5, and scramblesuit.1.
 * RENAME other bridges' preference names to keep the lists sequential.
 * FIXES part of #13504, sort of kind of. We still don't have historical
   metrics for these bridges for the period they were active.
Use the new security.ssl.disable_session_identifiers pref.

This is to reenable the TLS session tickets that are disabled by Tor
Browser, so the TLS client hello matches that of stock Firefox.

https://trac.torproject.org/projects/tor/ticket/13442#comment:1
https://trac.torproject.org/projects/tor/ticket/11183#comment:9

The previously used pref security.enable_tls_session_tickets has been
removed and replaced by security.ssl.disable_session_identifiers.

https://bugzilla.mozilla.org/show_bug.cgi?id=917049
https://bugzilla.mozilla.org/show_bug.cgi?id=967977
https://trac.torproject.org/projects/tor/ticket/10822
https://gitweb.torproject.org/tor-browser.git/commitdiff/5524ae43780e4738310852cc2a0b7c5d25aa69ed
Update changelog for meek fix.
Update version and changelog for Torbutton 1.8.0.1
Update versions+changelog for 13594 and 13666.
update_responses: add support for arch migration
Merge remote-tracking branch 'isis/bug13504'
Bump versions file and update changelog for a couple bugs.
Update target release date.
Merge remote-tracking branch 'boklm/migrate_arch_v2'
New config for 4.5-alpha-1 updates.
Update changelog and versions file for bugs 13742 and 13746.
Update changelog and version file (due to #13751).
Combine Torbutton cache isolation changelog entries.
Delete unused patches in tor descriptors.
Bug 13588: Ship only libgmp?10.* for FTE.

FTE seems to not need libgmpxx anymore. Additionally, we don't need
multiple copies of libgmp either. We remove all these unnecessary
libraries to save space and reduce complexity. Bug 13055 gets fixed by
this commit as well.
Bug 12238: Make Linux bundles reproducible on LXC.

Thanks to the investigation and this fix, Lunar.
It's "libgmp.10.so" and not "libgmp-10.so"!
Fix typo in gmp library name