More small changes to bring the two scripts closer together.

Original commit message from CVS:
More small changes to bring the two scripts closer together.
Turned off building docs by default in configure.ac.
Only diffs are now essential due to changes from autoconf 2.13 to 2.50.

configure.ac

@@ -523,15 +523,13 @@ AC_CHECK_HEADER(rtp/rtcp-packet.h, :, HAVE_LIBRTP=no)
 AC_CHECK_HEADER(rtp/rtp-audio.h, :, HAVE_LIBRTP=no)
 
 dnl Check for arts
-AC_DIAGNOSE([obsolete],[instead of using `AC_LANG', `AC_DIAGNOSE([obsolete],[instead of using `AC_LANG', `AC_LANG_SAVE',
+AC_DIAGNOSE([obsolete],[instead of using `AC_LANG', `AC_LANG_SAVE',
 and `AC_LANG_RESTORE', you should use `AC_LANG_PUSH' and `AC_LANG_POP'.])
-',
-and `AC_LANG_POP([])', you should use `AC_LANG_PUSH' and `AC_LANG_POP'.])
 
 AC_LANG_PUSH(C++)
 AC_MSG_CHECKING(arts library)
 dnl AC_CHECK_LIB(artsflow, convert_stereo_ifloat_2float, HAVE_ARTS=yes, HAVE_ARTS=no, -lmcop -lartsflow_idl)
-AC_CHECK_HEADER(arts/artsflow.h, HAVE_ARTS=yes, HAVE_ARTS=no)
+dnl AC_CHECK_HEADER(arts/artsflow.h, HAVE_ARTS=yes, HAVE_ARTS=no)
 AC_LANG_POP(C++)
 
 dnl Check for libraw1394
@@ -725,13 +723,13 @@ esac],
 [:]) dnl Default value
 
 AC_ARG_ENABLE(docs-build,
-[  --disable-docs-build         disable all building of documentation],
+[  --enable-docs-build          enable building of documentation],
 [case "${enableval}" in
   yes) BUILD_DOCS=yes ;;
   no)  BUILD_DOCS=no ;;
   *) AC_MSG_ERROR(bad value ${enableval} for --enable-docs-build) ;;
 esac], 
-[BUILD_DOCS=yes]) dnl Default value
+[BUILD_DOCS=no]) dnl Default value
 
 AC_ARG_ENABLE(plugin-docs,
 [  --enable-plugin-docs         enable the building of plugin documentation

configure.in

@@ -720,7 +720,7 @@ esac],
 [:]) dnl Default value
 
 AC_ARG_ENABLE(docs-build,
-[  --enable-docs-build           enable building of documentation],
+[  --enable-docs-build          enable building of documentation],
 [case "${enableval}" in
   yes) BUILD_DOCS=yes ;;
   no)  BUILD_DOCS=no ;;