Get generating manpages errors when emerge eclass-manpages

[zhtengw]

* Generating man pages from: /var/lib/layman/gentoo-zh/eclass

common-lisp-2.eclass:
   error (ignoring):138: eclass not documented yet (no @ECLASS found)

e-sources.eclass:
   error (ignoring):256: eclass not documented yet (no @ECLASS found)

erlang-pkg.eclass:
   error (ignoring):12: java documentation not supported
   error (ignoring):12: eclass not documented yet (no @ECLASS found)

font-got.eclass:
   error (ignoring):12: eclass not documented yet (no @ECLASS found)

fortune-zh.eclass:
   error (ignoring):51: eclass not documented yet (no @ECLASS found)

googlecode.eclass:
   error:11: googlecode.eclass: no @BLURB found
FAIL: /var/lib/layman/gentoo-zh/eclass/googlecode.eclass

npm.eclass:
   warning:27: NPM_MODULE: unable to extract default variable content: if [[ -z $NPM_MODULE ]]; then
   warning:43: NPM_DOCS: unable to extract default variable content: 
   warning:50: NPM_EXTRA_FILES: unable to extract default variable content: 

[liangyongxiang]

在清理了eclass之后问题消失了：#980