Revert "e2openplugins: update to HEAD"

Oops, wrong branch.

This reverts commit 0ac376d66e9d13ea451b651fa540a0976801ce3b.
e2openplugins: update to <head> try #2.
Merge branch 'master' of git://git.code.sf.net/p/openpli/openpli-oe-core