[Halld-offline] Modification to build_scripts default behavior

[Alexander Austregesilo]

Dear Colleagues,

As agreed upon in the Hall D software meeting yesterday, we have changed 
the default behavior of build_scripts. Starting from last midnight 
8/16/2022, the halld_recon and halld_sim software versions will be built 
by default with debug level 0 (no debug symbols, optimization level O3) 
instead of level 1 (debug symbols, optimization level O2). This reduced 
the disk footprint for the nightly-build software stack by about 85% 
(e.g. Centos7: 3.5gb instead of 24gb).

In the future, we will provide level 2 builds (debug symbols, no 
optimization) for updated releases in addition to the default, but limit 
the time of their retention on disk. These builds can be accessed via 
the "+dbg" tag. If built, the previous default behavior receives the tag 
"+optdbg". Experts may select the debug level in their own version.xml 
files with the key word "debug_level".

Thanks to Mark Ito for implementing this change in build_scripts 2.35. 
Please let me know in case you experience any problems.

Best regards,

Alex

-- 
Alexander Austregesilo

Staff Scientist - Experimental Nuclear Physics
Thomas Jefferson National Accelerator Facility
Newport News, VA
aaustreg at jlab.org
(757) 269-6982