Merged from trunk -r13865:13874

   Merged from trunk -r13865:13874

|13870  |In the _check_build_log(), exclude output from dev-libs/yaz-3.0.47     |
|zmedico|which looks like this: Configuration: Automake: ${SHELL}               |
|       |/var/tmp/portage/dev-libs/yaz-3.0.47/work/yaz-3.0.47/config/missing    |
|       |--run automake-1.10 Thanks to Robin H. Johnson <robbat2@gentoo.org> for|
|       |reporting.                                                             |

|13872  |Add support for --complete-graph=n so that it's possible to disable it |
|zmedico|on the command line after it's been enabled in EMERGE_DEFAULT_OPTS.    |

|13873  |Add support for --usepkg=n so that it's possible to disable it on the  |
|zmedico|command line after it's been enabled in EMERGE_DEFAULT_OPTS. Also do   |
|       |the same for --usepkgonly, --getbinpkg, and --getbinpkgonly.           |

|13874  |Only treat non-negative integers as valid in insert_optional_args().   |
|zmedico|                                                                       |

svn path=/main/branches/prefix/; revision=13876