update Siesta EasyBlock to support GCC 10+ by adding -fallow-argument-mismatch Fortran compiler option

[SebastianAchilles]

(created using eb --new-pr)

[SebastianAchilles]

Test report by @SebastianAchilles

Overview of tested easyconfigs (in order)

• SUCCESS Siesta-4.1.5-foss-2020a.eb
• SUCCESS Siesta-4.1-MaX-1.0-intel-2019b.eb
• SUCCESS Siesta-4.1-MaX-1.0-intel-2019b-PEXSI.eb

Build succeeded for 3 out of 3 (3 easyconfigs in total)
cnx1 - Linux Rocky Linux 8.5, x86_64, Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHz (haswell), Python 3.6.8
See https://gist.github.com/1469ea616dadb63a6d481c403d218198 for a full test report.

[boegel]

Test report by @boegel

Overview of tested easyconfigs (in order)

• SUCCESS wxPython-4.0.4-GCC-8.2.0-2.31.1-Python-3.7.2.eb
• FAIL (build issue) wxPython-3.0.2.0-foss-2018b-Python-2.7.15.eb (partial log available at https://gist.github.com/1daf1ce58efd2fc3a341fb5881d0a3ba)

Build succeeded for 1 out of 2 (2 easyconfigs in total)
node3120.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/2d573bfad02b0b235cbff6d39b3f96f1 for a full test report.

edit: wrong easyblock PR used for testing wxPython (should've been #2689), so ignore...

[boegel]

Test report by @boegel

Overview of tested easyconfigs (in order)

• SUCCESS Siesta-4.1-MaX-1.0-intel-2019b-PEXSI.eb
• SUCCESS Siesta-4.1-MaX-1.0-intel-2019b.eb
• SUCCESS Siesta-4.1.5-foss-2020a.eb

Build succeeded for 3 out of 3 (3 easyconfigs in total)
node3120.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/1a2cf805029ac4f83ba7b164989b6c2b for a full test report.

[boegel]

lgtm

[boegel]

Test report by @boegel

Overview of tested easyconfigs (in order)

• SUCCESS Siesta-4.1.5-intel-2020a.eb

Build succeeded for 1 out of 1 (1 easyconfigs in total)
node2604.swalot.os - Linux RHEL 8.4, x86_64, Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz (haswell), Python 3.6.8
See https://gist.github.com/bdcb772d41cdd258bebfedbd1310de6a for a full test report.