API bump forgotten

[Max Bowsher]

No API bump was made in version.h for this change:

       * cygwin.din: Accomodate change from cygwin_lstat to lstat.
       * syscalls.cc: Add defines to avoid declaration issues when
       renaming cygwin_lstat back to lstat.
       (lstat): Reverted name change from cygwin_lstat.

causing the "Error: Version info is older than DLL API!" check to halt the
build.


Max.