Merge pull request #324 in CASA/casa6 from CAS-13367 to master
* commit 'fbad32d7f32a554ef783d0129cf7189deec194d9':
add available values of the parameter sigmavalue.
Merge pull request #323 in CASA/casa6 from CAS-12204 to master
* commit '1893f70de57c182a69ea6bda1088b67ec883d4d9':
auto-calc chanchunks for awproject (7f04d42161f) should also work for <1, CAS-12204
handle missing casampi module, but don't accept import issues ->CASA6, CAS-12204
handle missing casampi module, but don't accept import issues, CAS-12204
log style adjustments, prevent negative 'rc memory' values, CAS-12204
fix compiler warning, unused vars, CAS-12204
print total estimate, don't divide by nprocs, CAS-12204
print to log nSubCubeFitInMemory params: mem_req, mem_avail, nsubcubes, procs, CAS-12204
clarified chanchunks warning (tentative) ->CASA6, CAS-12204
clarified chanchunks warning (tentative), CAS-12204
fix more constness, CAS-12204
restore auto-calculate chanchunks for awproject, CAS-12204
always use auto-calculate chunks, CAS-12204
remove old bypass_parallel stuff->CASA6, CAS-12204
remove old bypass_parallel stuff, CAS-12204
check presence and values of new proc info keywords in check_im_keywords->CASA6, CAS-12204
check presence and values of new proc info keywords in check_im_keywords, CAS-12204
add tclean processing info fields, return it from SubCubeFitInMemory(), CAS-12204
better constness, CAS-12204
