[crosstool-ng/crosstool-ng] 88e885: glibc: Clean out old glibc versions

[Bryan Hundven <bryanhundven at gmail dot com>]

  Branch: refs/heads/master
  Home:   https://github.com/crosstool-ng/crosstool-ng
  Commit: 88e8852ccd94a60979971454f8b49cb1d06cd907
      https://github.com/crosstool-ng/crosstool-ng/commit/88e8852ccd94a60979971454f8b49cb1d06cd907
  Author: Bryan Hundven <bryanhundven@gmail.com>
  Date:   2016-02-23 (Tue, 23 Feb 2016)

  Changed paths:
    M config/libc/glibc.in

  Log Message:
  -----------
  glibc: Clean out old glibc versions

We now only support glibc >=2.18
This now enables us to clean up glibc support!

Also, add a comment about glibc 2.20 as the point which glibc no longer
supports not building with pthread.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>


  Commit: cb87833b7b6e83a8375577d0219138d55052bc1c
      https://github.com/crosstool-ng/crosstool-ng/commit/cb87833b7b6e83a8375577d0219138d55052bc1c
  Author: Bryan Hundven <bryanhundven@gmail.com>
  Date:   2016-02-23 (Tue, 23 Feb 2016)

  Changed paths:
    M scripts/build/libc/glibc.sh

  Log Message:
  -----------
  glibc: reformat glibc build script

Move crosstool-ng hook functions to be in the normal locations.
This commit has no functional changes.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>


  Commit: 39273e0843cc5f7f91d50651b299a0472f59f472
      https://github.com/crosstool-ng/crosstool-ng/commit/39273e0843cc5f7f91d50651b299a0472f59f472
  Author: Bryan Hundven <bryanhundven@gmail.com>
  Date:   2016-02-23 (Tue, 23 Feb 2016)

  Changed paths:
    M scripts/build/libc/glibc.sh

  Log Message:
  -----------
  glibc: Remove support for downloading and extracting add-ons

Since external add-ons were removed in 2.17, and we only support >=
2.18, this support is no longer needed.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>


  Commit: 21d15e0fd6a9c0ffdc5ea39527d54f106f4a4c38
      https://github.com/crosstool-ng/crosstool-ng/commit/21d15e0fd6a9c0ffdc5ea39527d54f106f4a4c38
  Author: Bryan Hundven <bryanhundven@gmail.com>
  Date:   2016-02-23 (Tue, 23 Feb 2016)

  Changed paths:
    M scripts/build/libc/glibc.sh

  Log Message:
  -----------
  glibc: remove do_libc_locales_extract; it's empty

No point in calling an empty function. Must be left over from the
glibc/eglibc split up... then re-merge.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>


  Commit: ec9af46847376906f8add7d5c8f1137c832779dd
      https://github.com/crosstool-ng/crosstool-ng/commit/ec9af46847376906f8add7d5c8f1137c832779dd
  Author: Bryan Hundven <bryanhundven@gmail.com>
  Date:   2016-02-23 (Tue, 23 Feb 2016)

  Changed paths:
    M scripts/build/libc/glibc.sh

  Log Message:
  -----------
  glibc: Mirror extra_config flags from do_libc_backend_once

In do_libc_backend_once:
```
        # Also, if those two are missing, iconv build breaks
        extra_config+=( --disable-debug --disable-sanity-checks )
```

But in do_libc_locales we only add ```--disable-debug```.
This change adds ```--disable-sanity-checks``` to do_libc_locales to
mirror this, as I've seen iconv break this way.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>


  Commit: 6430ff506e7a71afa3810e42df0b72620a05ccd6
      https://github.com/crosstool-ng/crosstool-ng/commit/6430ff506e7a71afa3810e42df0b72620a05ccd6
  Author: Bryan Hundven <bryanhundven@gmail.com>
  Date:   2016-02-26 (Fri, 26 Feb 2016)

  Changed paths:
    M config/libc/glibc.in
    M scripts/build/libc/glibc.sh

  Log Message:
  -----------
  Merge pull request #353 from bhundven/glibc_cleanup

Glibc cleanup


Compare: https://github.com/crosstool-ng/crosstool-ng/compare/4d7e6fb0030d...6430ff506e7a

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