Hello/gnulib build bug: 'make dist' doesn't generate "configmake.h"

[Assaf Gordon]

Hello,

A small build error, possibly in 'gnulib' but easier to reproduce with 
GNU-Hello:
running "make dist" does not generate a required file "configmake.h".

To reproduce:
===
$ git clone git://git.savannah.gnu.org/hello.git
$ cd hello
$ ./bootstrap && ./configure && make dist
===

Fails with:
===
<...>
lib/localcharset.c:81:25: fatal error: configmake.h: No such file or directory
 # include "configmake.h"
                         ^
compilation terminated.
make[1]: *** [lib/localcharset.o] Error 1
make[1]: Leaving directory `/data/gordon/temp/hello'
make: *** [dist] Error 2
====

When adding a "make" step before "make dist", it works as expected.

Regards,
 -gordon