create libtinfo symlinks in easyconfigs for ncurses 6.2

[branfosj]

(created using eb --new-pr)

To fix the issue I see in building Perl in #13634 (comment)

We already do this for the SYSTEM toolchain ncurses.

edit (by @boegel): fixes #10663

[branfosj]

Test report by @branfosj
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in total)
bear-pg0211u08b.bear.cluster - Linux Ubuntu 20.04, x86_64, Intel(R) Xeon(R) Gold 6248 CPU @ 2.50GHz (cascadelake), Python 3.8.5
See https://gist.github.com/d8baf8ddf3b92bb572d50c22a477ea32 for a full test report.

[SebastianAchilles]

Test report by @SebastianAchilles
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in total)
centos8-eb - Linux centos linux 8.3.2011, x86_64, Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (skylake), Python 3.6.8
See https://gist.github.com/dcc3e54241f0d8c64739d3bbf2c23272 for a full test report.

[SebastianAchilles]

Test report by @SebastianAchilles
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in total)
rocky8-eb - Linux rocky linux 8.4, x86_64, Intel(R) Core(TM) i7-6900K CPU @ 3.20GHz (broadwell), Python 3.6.8
See https://gist.github.com/866d0c2feead5dee4ddb418886c0d961 for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in total)
node3100.skitty.os - Linux centos linux 7.9.2009, x86_64, Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz, Python 3.6.8
See https://gist.github.com/c3d0f66cfd027b91e9fff2dfba21366e for a full test report.

[boegel]

lgtm

[branfosj]

Test report by @branfosj
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in total)
bear-pg0305u19a.bear.cluster - Linux RHEL 8.4, POWER, 8335-GTX (power9le), Python 3.6.8
See https://gist.github.com/96870d71de0a37aec32d08db3a63c046 for a full test report.

[boegel]

Going in, thanks @branfosj!

[branfosj]

Test report by @branfosj
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in total)
bear-pg0211u03a.bear.cluster - Linux RHEL 8.3, x86_64, Intel(R) Xeon(R) Gold 6248 CPU @ 2.50GHz (cascadelake), Python 3.6.8
See https://gist.github.com/57be6c082ad96d06822e90e7606f0d55 for a full test report.