Merged from trunk 5748:5757

Merged from trunk 5748:5757

For bug #163083, handle an UnsupportedAPIException thrown from the prerm
phase.

use svn export (SpankMan)

move gen_usr_ldscript from eutils to toolchain-funcs to reflect actual
eclass status (SpankMan)

remove functions that dont exist anymore: draw_line get_number_of_jobs
have_NPTL (SpankMan)

document the functions built_with_use doicon newicon domenu newmenu
ebeep emktemp epause make_wrapper preserve_old_lib
preserve_old_lib_notify (SpankMan)

For bug #163219, handle binpkgs that have missing PF metadata.

svn path=/main/branches/prefix/; revision=5758