Fix MSDOS build broken by 2010-09-10T16:44:35Z!larsi@gnus.org, support MSDOS build...

 config.bat: Detect that libxml2 is installed and if so, build with it.
 src/deps.mk (xml.o): Add dependencies.
 msdos/sed1v2.inp (LIBXML2_LIBS, LIBXML2_CFLAGS): Edit to empty.

diff --cc src/ChangeLog
index 88030b7b4cef1802ed3a3082d10d03b6bb5bdcc9,5f154e5b0dbf3df45a4afa546b0ca295bad4cdbb..13184191725241bba0ad2d836c0ca359ef608c13
--- 1/src/ChangeLog
--- 2/src/ChangeLog
+++ b/src/ChangeLog
@@@ -1,30 -1,7 +1,34 @@@
+ 2010-09-18  Eli Zaretskii  <eliz@gnu.org>
+ 
+       * deps.mk (xml.o): Add dependencies.
+ 
 +2010-09-18  Eli Zaretskii  <eliz@gnu.org>
 +
 +      * xdisp.c (Fcurrent_bidi_paragraph_direction): Call
 +      bidi_paragraph_init with NO_DEFAULT_P non-zero.  (Bug#7038)
 +
 +      * bidi.c (bidi_paragraph_init): Accept an additional argument
 +      NO_DEFAULT_P; all callers changed.  If NO_DEFAULT_P is non-zero,
 +      search back until a paragraph with a strong directional character
 +      is found, and use that to determine paragraph's base direction.
 +
 +      * dispextern.h (bidi_paragraph_init): Update prototype.
 +
 +2010-09-17  Eli Zaretskii  <eliz@gnu.org>
 +
 +      * w32.c (_PROCESS_MEMORY_COUNTERS_EX): Don't define with versions
 +      of w32api >= 3.15.  (Bug#6989)
 +
 +2010-09-17  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 +
 +      * process.c (wait_reading_process_output): Don't message about
 +      accept-process-output unless the time limit really is zero.
 +
 +2010-09-17  Stefan Monnier  <monnier@iro.umontreal.ca>
 +
 +      * frame.c (Ftool_bar_pixel_width): YAILOM (Yet another
 +      int/Lisp_Object mixup).
 +
  2010-09-17  Jan Djärv  <jan.h.d@swipnet.se>
  
        * keyboard.c (parse_tool_bar_item): For QClabel, set TOOL_BAR_ITEM_LABEL