Regenerate configure and Makefile.in.

Signed-off-by: Jonathan Yong <10walls@gmail.com>

Makefile.in

diff --git a/Makefile.in b/Makefile.in
index 2eca4ed..3905aa6 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -158,7 +158,8 @@
 CSCOPE = cscope
 DIST_SUBDIRS = mingw-w64-headers mingw-w64-crt \
 	mingw-w64-libraries/libmangle mingw-w64-libraries/pseh \
-	mingw-w64-tools/gendef mingw-w64-tools/genidl
+	mingw-w64-libraries/winpthreads mingw-w64-tools/gendef \
+	mingw-w64-tools/genidl
 am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/config.h.in \
 	$(top_srcdir)/build-aux/config.guess \
 	$(top_srcdir)/build-aux/config.sub \
@@ -295,9 +296,10 @@
 @CRT_TRUE@MAYBE_CRT = mingw-w64-crt
 @LIBRARIES_MANGLE_TRUE@MAYBE_LIBRARIES_MANGLE = mingw-w64-libraries/libmangle
 @LIBRARIES_PSEH_TRUE@MAYBE_LIBRARIES_PSEH = mingw-w64-libraries/pseh
+@LIBRARIES_WINPTHREADS_TRUE@MAYBE_LIBRARIES_WINPTHREADS = mingw-w64-libraries/winpthreads
 @TOOLS_GENDEF_TRUE@MAYBE_TOOLS_GENDEF = mingw-w64-tools/gendef
 @TOOLS_GENIDL_TRUE@MAYBE_TOOLS_GENIDL = mingw-w64-tools/genidl
-SUBDIRS = $(MAYBE_HEADER) $(MAYBE_CRT) $(MAYBE_LIBRARIES_MANGLE) $(MAYBE_LIBRARIES_PSEH) $(MAYBE_TOOLS_GENDEF) $(MAYBE_TOOLS_GENIDL)
+SUBDIRS = $(MAYBE_HEADER) $(MAYBE_CRT) $(MAYBE_LIBRARIES_MANGLE) $(MAYBE_LIBRARIES_PSEH) $(MAYBE_LIBRARIES_WINPTHREADS) $(MAYBE_TOOLS_GENDEF) $(MAYBE_TOOLS_GENIDL)
 DISTCHECK_CONFIGURE_FLAGS = --with-headers --with-crt --with-libraries=all --with-tools=all
 all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-recursive

configure

diff --git a/configure b/configure
index d5ce60b..c88e4b8 100755
--- a/configure
+++ b/configure
@@ -592,6 +592,8 @@
 TOOLS_GENIDL_TRUE
 TOOLS_GENDEF_FALSE
 TOOLS_GENDEF_TRUE
+LIBRARIES_WINPTHREADS_FALSE
+LIBRARIES_WINPTHREADS_TRUE
 LIBRARIES_PSEH_FALSE
 LIBRARIES_PSEH_TRUE
 LIBRARIES_MANGLE_FALSE
@@ -694,6 +696,7 @@
 mingw-w64-crt
 mingw-w64-libraries/libmangle
 mingw-w64-libraries/pseh
+mingw-w64-libraries/winpthreads
 mingw-w64-tools/gendef
 mingw-w64-tools/genidl'
 
@@ -1325,7 +1328,7 @@
   --without-headers       Skip building the mingw-w64 headers
   --without-crt           Skip building the mingw-w64 crt
   --with-libraries=ARG    Build the extra mingw-w64 libs, where ARG is one of
-                          libmangle, pseh, or all
+                          libmangle, pseh, winpthreads, or all
   --with-tools=ARG        Build the extra mingw-w64 tools, where ARG is one of
                           gendef, genidl, or all
 
@@ -2552,21 +2555,31 @@
 case $with_libraries in #(
   yes|all) :
 
-    with_libraries="libmangle,pseh"
+    with_libraries="libmangle,pseh,winpthreads"
+    with_libraries_winpthreads=yes
     with_libraries_mangle=yes
     with_libraries_pseh=yes ;; #(
   libmangle) :
 
     with_libraries="libmangle"
+    with_libraries_winpthreads=no
     with_libraries_mangle=yes
     with_libraries_pseh=no ;; #(
   pseh) :
 
     with_libraries="pseh"
+    with_libraries_winpthreads=no
     with_libraries_mangle=no
     with_libraries_pseh=yes ;; #(
+  winpthreads) :
+
+    with_libraries="winpthreads"
+    with_libraries_winpthreads=yes
+    with_libraries_mangle=no
+    with_libraries_pseh=no ;; #(
   no) :
 
+    with_libraries_winpthreads=no
     with_libraries_mangle=no
     with_libraries_pseh=no ;; #(
   *) :
@@ -2588,6 +2601,14 @@
   LIBRARIES_PSEH_FALSE=
 fi
 
+ if test "x$with_libraries_winpthreads" = xyes; then
+  LIBRARIES_WINPTHREADS_TRUE=
+  LIBRARIES_WINPTHREADS_FALSE='#'
+else
+  LIBRARIES_WINPTHREADS_TRUE='#'
+  LIBRARIES_WINPTHREADS_FALSE=
+fi
+
 if test -z "$LIBRARIES_MANGLE_TRUE"; then :
   subdirs="$subdirs mingw-w64-libraries/libmangle"
 
@@ -2596,6 +2617,10 @@
   subdirs="$subdirs mingw-w64-libraries/pseh"
 
 fi
+if test -z "$LIBRARIES_WINPTHREADS_TRUE"; then :
+  subdirs="$subdirs mingw-w64-libraries/winpthreads"
+
+fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_libraries" >&5
 $as_echo "$with_libraries" >&6; }
 
@@ -2799,6 +2824,10 @@
   as_fn_error $? "conditional \"LIBRARIES_PSEH\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${LIBRARIES_WINPTHREADS_TRUE}" && test -z "${LIBRARIES_WINPTHREADS_FALSE}"; then
+  as_fn_error $? "conditional \"LIBRARIES_WINPTHREADS\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${TOOLS_GENDEF_TRUE}" && test -z "${TOOLS_GENDEF_FALSE}"; then
   as_fn_error $? "conditional \"TOOLS_GENDEF\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5