Integrate Mono.Posix OEE with Mono.

Integrate Mono.Posix OEE with Mono.
  * support/.cvsignore: Ignore generated files.
  * support/Makefile.am: Add new INCLUDE directives (for glib headers),
    source; bump library version (so we don't clobber previous versions of
    libMonoPosixHelper.so).
  * support/dirent.c: New file; <dirent.h> wrapper functions
  * support/errno.c: New file; <errno.h> wrapper functions
  * support/fcntl.c: New file; <fcntl.h> wrapper functions
  * support/grp.c: New file; <grp.h> wrapper functions
  * support/map.c: Updated macro mapping functions (more enums mapped, more
    error checking, etc.).
  * support/map.h: Updated macro mapping functions
  * support/old-map.c: Previous map.c implementation, for backward compatibility
  * support/old-map.h: Previous map.h implementation, for backward compatibility
  * support/mph.h: New file; Utility types, macros
  * support/pwd.c: New file; <pwd.h> wrapper functions
  * support/stdio.c: New file; <stdio.h> wrapper functions
  * support/stdlib.c: New file; <stdlib.h> wrapper functions
  * support/sys-mman.c: New file; <sys/mman.h> wrapper functions
  * support/sys-mount.c: New file; <sys/mount.h> wrapper functions
  * support/sys-sendfile.c: New file; <sys/sendfile.h> wrapper functions
  * support/sys-stat.c: New file; <sys/stat.h> wrapper functions
  * support/sys-wait.c: New file; <sys/wait.h> wrapper functions
  * support/time.c: New file; <time.h> wrapper functions
  * support/unistd.c: New file; <unistd.h> wrapper functions

svn path=/trunk/mono/; revision=35689