changed header of printout to be compatible with python csv module

[pagrubel]

Changed header for python csv module which will only accept letters, numbers and '_' . Also, it doesn't like spaces before the header column labels.

[hkaiser]

I'm fine with merging this

[sithhell]

ok to test

[StellarBot]

Can one of the admins verify this patch?

[StellarBot]

Test Failed.
Refer to this link for build results: http://hermione.cct.lsu.edu:5632job/hpx_pr_debug_gcc_44_boost_1_55_0/30/

[sithhell]

@pagrubel can you please update your pull request to be based against the latest master?

[StellarBot]

Test Failed.
Refer to this link for build results: http://hermione.cct.lsu.edu:5632job/hpx_pr_debug_gcc_46_boost_1_55_0/10/

[StellarBot]

Can one of the admins verify this patch?

[StellarBot]

Test Failed.
Refer to this link for build results: http://hermione.cct.lsu.edu:5632job/hpx_pr_debug_gcc_46_boost_1_55_0/12/

[StellarBot]

Test Failed.
Refer to this link for build results: http://hermione.cct.lsu.edu:5632job/hpx_pr_debug_gcc_44_boost_1_55_0/32/