maint: avoid skipping non-Java tests when Java is missing

[Akim Demaille]

Two minor patches for the "maint" branch.  Maybe 3.0.3 is ready?
There are other issues to fix, sure, but there are already many
that have been fixed.

commit d72642d6915dbecd28609d307ef4676d1d5ab448
Author: Akim Demaille <address@hidden>
Date:   Mon Jan 12 12:11:53 2015 +0100

    package: a bit of trouble shooting indications
    
    * README-hacking: here.

diff --git a/README-hacking b/README-hacking
index 4b77374..25e4ef3 100644
--- a/README-hacking
+++ b/README-hacking
@@ -103,15 +103,17 @@ to perform the first checkout of the submodules, run
 
        $ git submodule update --init
 
-Git submodule support is weak before versions 1.6 and later, you
-should probably upgrade Git if your version is older.
+Git submodule support is weak before versions 1.6 and later, upgrade Git if
+your version is older.
 
 The next step is to get other files needed to build, which are
 extracted from other source packages:
 
         $ ./bootstrap
 
-And there you are!  Just
+If it fails with missing symbols (e.g., "error: possibly undefined macro:
+AC_PROG_GNU_M4"), you are likely to have forgotten the submodule
+initialization part.  Otherwise, there you are!  Just
 
         $ ./configure
         $ make

commit ca5a716303f9262572764671ce4e51a0a08d4c94
Author: Akim Demaille <address@hidden>
Date:   Tue Jan 13 14:15:47 2015 +0100

    tests: split a large test case into several smaller ones
    
    * tests/conflicts.at (AT_CONSISTENT_ERRORS_CHECK): Move AT_SETUP/AT_CLEANUP
    into it, so that we don't skip non Java tests following a test case in Java.

diff --git a/tests/conflicts.at b/tests/conflicts.at
index 819b992..03b8fa2 100644
--- a/tests/conflicts.at
+++ b/tests/conflicts.at
@@ -393,10 +393,10 @@ AT_CLEANUP
 ## parse.error=verbose and consistent errors.  ##
 ## ------------------------------------------- ##
 
-AT_SETUP([[parse.error=verbose and consistent errors]])
-
 m4_pushdef([AT_CONSISTENT_ERRORS_CHECK], [
 
+AT_SETUP([[parse.error=verbose and consistent errors: $1]])
+
 AT_BISON_OPTION_PUSHDEFS([$1])
 
 m4_pushdef([AT_YYLEX_PROTOTYPE],
@@ -483,7 +483,11 @@ m4_popdef([AT_EXPECTING])
 m4_popdef([AT_YYLEX_PROTOTYPE])
 AT_BISON_OPTION_POPDEFS
 
-])
+AT_CLEANUP
+]) dnl AT_CONSISTENT_ERRORS_CHECK
+
+
+
 
 m4_pushdef([AT_PREVIOUS_STATE_GRAMMAR],
 [[%nonassoc 'a';
@@ -653,7 +657,6 @@ m4_popdef([AT_USER_ACTION_INPUT])
 
 m4_popdef([AT_CONSISTENT_ERRORS_CHECK])
 
-AT_CLEANUP