enhance logging format: remove logger name, mention location instead

[boegel]

logging format in EasyBuild v2.6.0:

== 2016-03-03 11:08:55,835 runpy.EB_bzip2 INFO This is easyblock EB_bzip2 from module easybuild.easyblocks.bzip2 (/Users/kehoste/work/easybuild-easyblocks/easybuild/easyblocks/b/bzip2.pyc)
...
== 2016-03-03 11:07:26,007 runpy.EB_bzip2 INFO Running method configure_step part of step configure

in current develop, this has changed to this, because of running in optimised mode (cfr. #1357):

== 2016-03-03 11:08:46,118 not available in optimized mode.EB_bzip2 INFO This is easyblock EB_bzip2 from module easybuild.easyblocks.bzip2 (/Users/kehoste/work/easybuild-easyblocks/easybuild/easyblocks/b/bzip2.pyo)
...
== 2016-03-03 11:07:35,524 not available in optimized mode.EB_bzip2 INFO Running method configure_step part of step configure

The proposed change modifies this, by removing the logger name (which is pretty useless anyway), and replacing it with the location from which the log message is sent:

== 2016-03-03 11:08:18,697 easybuild/framework/easyblock.py:257 INFO This is easyblock EB_bzip2 from module easybuild.easyblocks.bzip2 (/Users/kehoste/work/easybuild-easyblocks/easybuild/easyblocks/b/bzip2.pyo)
...
== 2016-03-03 11:07:12,073 easybuild/framework/easyblock.py:2056 INFO Running method configure_step part of step configure

[boegel]

@wpoely86: thoughts?

[wpoely86]

👍

[hpcugentbot]

EasyBuild framework unit test suite PASSed (see https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2822/console for more details).

This pull request is now ready for review/testing.

Please try and find someone who can tackle this; contact @boegel if you're not sure what to do.

[boegel]

Jenkins agrees \o/

Thanks for the review @wpoely86!

[gppezzi]

I was getting attached to "not available in optimized mode" :(

[boegel]

@gppezzi: shall we add an option so you can keep using it?

[wpoely86]

It can grow a bit unwieldy:

== 2016-03-04 16:39:31,880 /dev/shm/ward/eb_sandbox_20160304_16-32-22_TrglR/easybuild-framework/easybuild/tools/environment.py:97 INFO Environment variable SCALAPACK_STATIC_LIBS set to libmkl_scalapack_lp64.a,libmkl_blacs_intelmpi_lp64.a,libmkl_intel_lp64.a,libmkl_sequential.a,libmkl_core.a (previously undefined)

[boegel]

eek, indeed...

I'll switch to using %(filename)s instead, which will yield

== 2016-03-04 16:39:31,880 environment.py:97 INFO Environment variable SCALAPACK_STATIC_LIBS set to libmkl_scalapack_lp64.a,libmkl_blacs_intelmpi_lp64.a,libmkl_intel_lp64.a,libmkl_sequential.a,libmkl_core.a (previously undefined)