incorporate these from omnios-build/template:

6c7f5a1 3 weeks ago Merge pull request #32 from niksula/use_sudo_variable
6d7b5b8 3 weeks ago use $SUDO for sudo
9dc1910 9 weeks ago Don't mask failures in verbose mode
4ad76b7 10 weeks ago Merge pull request #29 from niksula/fix_infodir_drop
5c414d1 10 weeks ago fix dropping gnu info dir files
switch confused build system to 4.8.1 instead of checking for gcc 4.7.2 them complaining about missing gcc48
update RELVER to match current release