make autogen ability to remember the last command line work on MacOS
make autogen ability to remember the last command line work on MacOS

futhermore: the conf.log extraction method is no reliable. autoconf
has changed and newer version don't put it there.
furthermore, because of the post_download generation,
the conf.log get crowded by a second autoconf...

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core