Explicitly require gnulib stdbool module.

It seems that updating gnulib has caused this to not always be pulled
in, in particular the header is no longer generated on HP-UX 11, leading
to build failures.

diff --git a/m4/gnulib-cache.m4 b/m4/gnulib-cache.m4
index e06a0a7eb94969a2d0668256163c9992a47454cd..870a647eefac1ee821871cab6abd9ada69b2943d 100644 (file)
--- a/m4/gnulib-cache.m4
+++ b/m4/gnulib-cache.m4
@@ -48,6 +48,7 @@
 #  inttypes-incomplete \
 #  lock \
 #  readline \
+#  stdbool \
 #  tls
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
@@ -60,6 +61,7 @@ gl_MODULES([
   inttypes-incomplete
   lock
   readline
+  stdbool
   tls
 ])
 gl_AVOID([gperf std-gnu11])