make message about texi2mdoc more clear.

README

@@ -139,7 +139,9 @@ These are the optional dependencies:
 - miniupnpc
 - perl5                             (for some utilities)
 - TeX Live           >= 2012        (for gnunet-bcd[*])
-- texi2mdoc                         (for automatic mdoc generation [*2])
+- texi2mdoc                         (for automatic mdoc generation [*2], not
+                                     the texi2mdoc script distributed with
+                                     autogen but the texi2mdoc C application)
 
 Recommended autotools for compiling the Git version are:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -161,7 +163,7 @@ Recommended autotools for compiling the Git version are:
      documentation (experimental stages in gnunet).
      If this proves to be reliable, we will
      include the mdocml output in the release tarballs.
-     Contrary to the name, texi2mdoc does not require texinfo,
+     Contrary to the name, texi2mdoc does not require Texinfo,
      It is a standalone ISO C utility.
 
 [*3] GNU make introduced the != operator in version 4.0.

configure.ac

@@ -437,14 +437,15 @@ AS_IF([test "x$texi2mdoc_generation" = "xyes"],
                  [0],
                  [Not building section 7 mdoc output])])
 
-# test for texi2mdoc
+# test for texi2mdoc (the binary, not the script distributed
+# with autogen)
 # TODO: refactor this and the check above.
-AC_MSG_CHECKING(for texi2mdoc)
+AC_MSG_CHECKING(for texi2mdoc binary)
 AC_CHECK_PROGS(TEXI2MDOC_BINARY, [texi2mdoc], false)
 AM_CONDITIONAL(HAVE_TEXI2MDOC, test x$TEXI2MDOC_BINARY != xfalse)
 
 # test for mandoc
-AC_MSG_CHECKING(for mandoc)
+AC_MSG_CHECKING(for mandoc binary)
 AC_CHECK_PROGS(MANDOC_BINARY, [mandoc], false)
 AM_CONDITIONAL(HAVE_MANDOC, test x$MANDOC_BINARY != xfalse)