statpost() refactored to fork-n-wget with individual node logic retained

[TheCranston]

Description This is an update to app_rpt.c which replaces the libcurl code in the statpost function. It reverts to the old fork-n-wget method from the 1.01 release but retains the 1.02 logic allowing a per node statpost override.

Checklist

• [X] Pull submitted to correct branch of repository (develop)
• [X] Code compiles correctly
• [NA] Information on how to compile code included
• [NA] Created tests which fail without the change (if possible)
• [X] All tests passing
• [X] Any tests done are included along with their resuts (pass or fail)
• [NA] Extended/created the README / documentation, if necessary
• [NA] Added myself / the copyright holder to the AUTHORS file
• [X] Developers Certificate of Origin (DCO) included

[TheCranston]

Found a defect passing args to the forked process. closing PR and will re-issue.