(from Stas)
Upon signal handler entry:
Restore the eflags instead of explicitly clearing AC and ID.
Also restore the %fs and %gs registers for compatibility with NPTL.


git-svn-id: https://dosemu.svn.sourceforge.net/svnroot/dosemu/trunk@99 7758b857-130e-0410-ab9c-d8735a528d18