Add the wchar and wctype-h modules from the GNU Portability Library

lib/.gitignore

@@ -91,6 +91,7 @@ verify.h
 vfprintf.c
 vsnprintf.c
 wchar.in.h
+wctype.in.h
 xsize.h
 
 alloca.h
@@ -119,6 +120,7 @@ unitypes.h
 unused-parameter.h
 warn-on-use.h
 wchar.h
+wctype.h
 
 unistr/.dirstamp
 unistr/u8-mbtoucr.c

m4/.gitignore

@@ -98,5 +98,6 @@ vsnprintf.m4
 warn-on-use.m4
 wchar_h.m4
 wchar_t.m4
+wctype_h.m4
 wint_t.m4
 xsize.m4

m4/gnulib-cache.m4

@@ -15,7 +15,7 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --no-conditional-dependencies --no-libtool --macro-prefix=gl assert config-h ctype fprintf-posix getopt-gnu gettext gettext-h gettimeofday langinfo locale printf-posix sigaction signal snprintf-posix stat stdarg stdbool stdio strdup-posix striconv string strncat strstr sys_stat sys_time unistd vfprintf-posix vsnprintf-posix
+#   gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --no-conditional-dependencies --no-libtool --macro-prefix=gl assert config-h ctype fprintf-posix getopt-gnu gettext gettext-h gettimeofday langinfo locale printf-posix sigaction signal snprintf-posix stat stdarg stdbool stdio strdup-posix striconv string strncat strstr sys_stat sys_time unistd vfprintf-posix vsnprintf-posix wchar wctype-h
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
@@ -48,6 +48,8 @@ gl_MODULES([
   unistd
   vfprintf-posix
   vsnprintf-posix
+  wchar
+  wctype-h
 ])
 gl_AVOID([])
 gl_SOURCE_BASE([lib])

src/system.h

@@ -59,6 +59,8 @@
 #include <ctype.h>
 #include <string.h>
 #include <errno.h>
+#include <wchar.h>
+#include <wctype.h>
 
 
 // Headers defined by X/Open Single Unix Specification v4