nauty: Switch to autotoolized fork so that shared libraries can be built

[mkoeppe]

(split out from #27952).

The fork is at ​https://github.com/mkoeppe/nauty

[mkoeppe]

As seen in ​https://github.com/Normaliz/Normaliz/runs/936924467, this needs more work:

  [nauty-2.7.1+ds+sage-2020-08-01]   /usr/bin/ld: cannot open linker script file ./nauty.map: No such file or directory
  [nauty-2.7.1+ds+sage-2020-08-01]   collect2: error: ld returned 1 exit status

---

New commits:

​9ebc487

build/pkgs/nauty: Switch to autotoolized fork

[mkoeppe]

(removing cc as requested)

[git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. Last 10 new commits:

​6e9191a	build/pkgs/e_antic: Update to 0.1.8
​a906db8	Merge branch 't/30262/update_e_antic_to_0_1_8' into t/27952/normaliz
​582c309	build/pkgs/normaliz: Update to 3.8.7
​13c0375	build/pkgs/pynormaliz: Update to 2.12
​027ef5f	build/pkgs/pynormaliz: Fix upstream_url
​0882611	Merge tag '9.2.beta7' into t/30262/update_e_antic_to_0_1_8
​071bfc7	Merge branch 't/30262/update_e_antic_to_0_1_8' into t/27952/normaliz
​f3e8fc2	document far facet condition and add a doctest
​3f2d872	Merge tag '9.2.beta8' into t/27952/normaliz
​ba75940	Merge branch 't/27952/normaliz' into t/30271/nauty__switch_to_autotoolized_fork_so_that_shared_libraries_can_be_built

[mkoeppe]

ubuntu-trusty-maximal (​https://github.com/mkoeppe/sage/runs/974420086)

/sage/local/var/tmp/sage/build/nauty-2.7.1+ds+sage-2020-08-02/src/sumlines.c:1512: undefined reference to `__gmpz_init'
sumlines-sumlines.o: In function `add_one':
/sage/local/var/tmp/sage/build/nauty-2.7.1+ds+sage-2020-08-02/src/sumlines.c:677: undefined reference to `__gmpz_init_set'
/sage/local/var/tmp/sage/build/nauty-2.7.1+ds+sage-2020-08-02/src/sumlines.c:629: undefined reference to `__gmpz_add'
sumlines-sumlines.o: In function `scanline':
/sage/local/var/tmp/sage/build/nauty-2.7.1+ds+sage-2020-08-02/src/sumlines.c:961: undefined reference to `__gmpz_set_str'
sumlines-sumlines.o: In function `writeline':
/sage/local/var/tmp/sage/build/nauty-2.7.1+ds+sage-2020-08-02/src/sumlines.c:388: undefined reference to `__gmpz_out_str'
collect2: error: ld returned 1 exit status

Worked ok on ubuntu-bionic-maximal (​https://github.com/mkoeppe/sage/runs/974420157)

[mkoeppe]

@thansen: ​https://github.com/mkoeppe/nauty continues the autotoolization of nauty that is done partially by the Debian package. This may be of interest to the Debian maintainers

[mkoeppe]

Setting new milestone based on a cursory review of ticket status, priority, and last modification date.