Fix several linking issues

* configure.ac: Require libtool version 2.4.6
(MU_LINK_POSTFLAGS): Remove.  Not needed with the patched version
of ltmain.sh.
Detect the presencecof GSSAPI.
Fix displaying the status of GSSAPI support.
Remove the hack introduced on 2010-02-19 (commit 35ac66f056).
(MU_AUTHLIBS,SQLLIB)
(SQL_LOADABLE_MODULES,SQL_LIBOBJS): Insert spaces only when needed.

* mu-aux/ltmain.sh: ltmain.sh from libtool 2.4.6 with fixes from
http://gray.gnu.org.ua/public/ltbug installed.
* bootstrap.conf (bootstrap_epilogue): Install the fixed ltmain.sh
version.

* am/gssapi.m4: Allow for "yes" and "probe" argument values.

Improve makefile style consistency

 . Uniformly use parentheses instead of curly braces in variable
   referencing;
 . Prefer to use Make variables over substitution variables, for
   variables prefixed with MU_;

* comsat/Makefile.am
* dotlock/Makefile.am
* examples/Makefile.am
* examples/cpp/Makefile.am
* frm/Makefile.am
* imap4d/Makefile.am
* imap4d/tests/Makefile.am
* lib/Makefile.am
* libmailutils/Makefile.am
* libmailutils/address/Makefile.am
* libmailutils/auth/Makefile.am
* libmailutils/base/Makefile.am
* libmailutils/cfg/Makefile.am
* libmailutils/cidr/Makefile.am
* libmailutils/cli/Makefile.am
* libmailutils/datetime/Makefile.am
* libmailutils/diag/Makefile.am
* libmailutils/filter/Makefile.am
* libmailutils/imapio/Makefile.am
* libmailutils/list/Makefile.am
* libmailutils/locus/Makefile.am
* libmailutils/mailbox/Makefile.am
* libmailutils/mailcap/Makefile.am
* libmailutils/mailer/Makefile.am
* libmailutils/mime/Makefile.am
* libmailutils/msgset/Makefile.am
* libmailutils/opt/Makefile.am
* libmailutils/property/Makefile.am
* libmailutils/server/Makefile.am
* libmailutils/sockaddr/Makefile.am
* libmailutils/stdstream/Makefile.am
* libmailutils/stream/Makefile.am
* libmailutils/string/Makefile.am
* libmailutils/tests/Makefile.am
* libmailutils/url/Makefile.am
* libmailutils/wicket/Makefile.am
* libmu_auth/Makefile.am
* libmu_cpp/Makefile.am
* libmu_dbm/Makefile.am
* libmu_scm/Makefile.am
* libmu_scm/mailutils/Makefile.am
* libmu_sieve/Makefile.am
* libmu_sieve/extensions/Makefile.am
* libproto/dotmail/Makefile.am
* libproto/dotmail/tests/Makefile.am
* libproto/imap/Makefile.am
* libproto/imap/tests/Makefile.am
* libproto/maildir/Makefile.am
* libproto/mailer/Makefile.am
* libproto/mbox/Makefile.am
* libproto/mh/Makefile.am
* libproto/nntp/Makefile.am
* libproto/pop/Makefile.am
* mail/Makefile.am
* mapi/Makefile.am
* mda/lib/Makefile.am
* mda/lmtpd/Makefile.am
* mda/mda/Makefile.am
* mda/mda/tests/Makefile.am
* mda/putmail/Makefile.am
* messages/Makefile.am
* mh/Makefile.am
* mh/tests/Makefile.am
* mimeview/Makefile.am
* movemail/Makefile.am
* mu/Makefile.am
* mu/libexec/Makefile.am
* pop3d/Makefile.am
* python/2/libmu_py/Makefile.am
* python/2/mailutils/Makefile.am
* python/3/libmu_py/Makefile.am
* python/3/mailutils/Makefile.am
* readmsg/Makefile.am
* sieve/Makefile.am
* sql/Makefile.am
* testsuite/Makefile.am

1 files changed, 2 insertions, 2 deletions

diff --git a/libmailutils/tests/Makefile.am b/libmailutils/tests/Makefile.am
index 64cba2b97..f0f7ff034 100644
--- a/libmailutils/tests/Makefile.am
+++ b/libmailutils/tests/Makefile.am
@@ -21,7 +21,7 @@ AUTOTEST_INCLUDES += -I $(top_srcdir)/libmailutils/wordsplit
 ## Non-installable programs
 ## -------------------------- ##
 
-AM_CPPFLAGS = @MU_LIB_COMMON_INCLUDES@
+AM_CPPFLAGS = $(MU_LIB_COMMON_INCLUDES)
 
 noinst_LTLIBRARIES = libmu_tesh.la
 libmu_tesh_la_SOURCES = tesh.c tesh.h
@@ -76,7 +76,7 @@ linetrack_LDADD = libmu_tesh.la $(LDADD)
 
 listop_LDADD = libmu_tesh.la $(LDADD)
 
-LDADD = ${MU_LIB_MAILUTILS}
+LDADD = $(MU_LIB_MAILUTILS)
 
 EXTRA_DIST += Encode Decode Wicketfile