Update to nawk-20050424. Fixes several overflow and RE bugs, as well as

preserving $0 in END block.

dist/nawk/FIXES

@@ -25,6 +25,55 @@ THIS SOFTWARE.
 This file lists all bug fixes, changes, etc., made since the AWK book
 was sent to the printers in August, 1987.
 
+Apr 24, 2005:
+	modified lib.c so that values of $0 et al are preserved in the END
+	block, apparently as required by posix.  thanks to havard eidnes
+	for the report and code.
+
+Jan 14, 2005:
+	fixed infinite loop in parsing, originally found by brian tsang.
+	thanks to arnold robbins for a suggestion that started me
+	rethinking it.
+
+Dec 31, 2004:
+	prevent overflow of -f array in main, head off potential error in 
+	call of SYNTAX(), test malloc return in lib.c, all with thanks to 
+	todd miller.
+
+Dec 22, 2004:
+	cranked up size of NCHARS; coverity thinks it can be overrun with
+	smaller size, and i think that's right.  added some assertions to b.c
+	to catch places where it might overrun.  the RE code is still fragile.
+
+Dec 5, 2004:
+	fixed a couple of overflow problems with ridiculous field numbers:
+	e.g., print $(2^32-1).  thanks to ruslan ermilov, giorgos keramidas
+	and david o'brien at freebsd.org for patches.  this really should
+	be re-done from scratch.
+
+Nov 21, 2004:
+	fixed another 25-year-old RE bug, in split.  it's another failure
+	to (re-)initialize.  thanks to steve fisher for spotting this and
+	providing a good test case.
+
+Nov 22, 2003:
+	fixed a bug in regular expressions that dates (so help me) from 1977;
+	it's been there from the beginning.  an anchored longest match that
+	was longer than the number of states triggered a failure to initialize
+	the machine properly.  many thanks to moinak ghosh for not only finding
+	this one but for providing a fix, in some of the most mysterious
+	code known to man.
+
+	fixed a storage leak in call() that appears to have been there since
+	1983 or so -- a function without an explicit return that assigns a 
+	string to a parameter leaked a Cell.  thanks to moinak ghosh for 
+	spotting this very subtle one.
+
+Jul 31, 2003:
+	fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
+	that mis-handled the character 255 in input.  (it was being compared
+	to EOF with a signed comparison.)
+
 Jul 29, 2003:
 	fixed (i think) the long-standing botch that included the beginning of
 	line state ^ for RE's in the set of valid characters; this led to a
@@ -204,7 +253,7 @@ Apr 21, 2000:
 	jon bentley for the test case that found it.
 
 	added test in envinit to catch environment "variables" with
-	names begining with '='; thanks to Berend Hasselman.
+	names beginning with '='; thanks to Berend Hasselman.
 
 Jul 28, 1999:
 	added test in defn() to catch function foo(foo), which
@@ -441,7 +490,7 @@ May 2, 1996:
 	some awful behaviors.)
 
 Apr 29, 1996:
-	replaced uchar by uschar everwhere; apparently some compilers
+	replaced uchar by uschar everywhere; apparently some compilers
 	usurp this name and this causes conflicts.
 
 	fixed call to time in run.c (bltin); arg is time_t *.

dist/nawk/vcvars32.bat

@@ -0,0 +1,33 @@
+@echo off
+rem
+rem Root of Visual Developer Studio Common files.
+set VSCommonDir=C:\PROGRA~1\MICROS~3\Common
+
+rem
+rem Root of Visual Developer Studio installed files.
+rem
+set MSDevDir=C:\PROGRA~1\MICROS~3\Common\msdev98
+
+rem
+rem Root of Visual C++ installed files.
+rem
+set MSVCDir=C:\PROGRA~1\MICROS~3\VC98
+
+rem
+rem VcOsDir is used to help create either a Windows 95 or Windows NT specific path.
+rem
+set VcOsDir=WIN95
+if "%OS%" == "Windows_NT" set VcOsDir=WINNT
+
+rem
+echo Setting environment for using Microsoft Visual C++ tools.
+rem
+
+if "%OS%" == "Windows_NT" set PATH=%MSDevDir%\BIN;%MSVCDir%\BIN;%VSCommonDir%\TOOLS\%VcOsDir%;%VSCommonDir%\TOOLS;%PATH%
+if "%OS%" == "" set PATH="%MSDevDir%\BIN";"%MSVCDir%\BIN";"%VSCommonDir%\TOOLS\%VcOsDir%";"%VSCommonDir%\TOOLS";"%windir%\SYSTEM";"%PATH%"
+set INCLUDE=%MSVCDir%\ATL\INCLUDE;%MSVCDir%\INCLUDE;%MSVCDir%\MFC\INCLUDE;%INCLUDE%
+set LIB=%MSVCDir%\LIB;%MSVCDir%\MFC\LIB;%LIB%
+
+set VcOsDir=
+set VSCommonDir=
+