Log Message:
Update emacs-snapshot to 23.1.92.20100217.

Changes:
        * configure.in: Check for utmp.h availability (FreeBSD 9.x lacks
        this header file).
        * .bzrignore: Ignore all .exe, instead of individual files.
        * configure.in: Explicitly check for and link to -lXrender.
        * INSTALL.BZR, README: Use bug-gnu-emacs rather than emacs-pretest-b
        for bug reports for development versions.