New --disable-glib configure option

This option uses the fake GLib shim even when GLib is present on the
system.

src/libmdb/Makefile.am

@@ -1,6 +1,6 @@
 lib_LTLIBRARIES	=	libmdb.la
 libmdb_la_SOURCES=	catalog.c mem.c file.c table.c data.c dump.c backend.c money.c sargs.c index.c like.c write.c stats.c map.c props.c worktable.c options.c iconv.c
-if !HAVE_GLIB
+if FAKE_GLIB
 libmdb_la_SOURCES += fakeglib.c
 endif
 libmdb_la_LDFLAGS = -version-info 2:1:0 -export-symbols-regex '^(mdb_|_mdb_put_int16$$|_mdb_put_int32$$)'

src/sql/Makefile.am

@@ -3,7 +3,7 @@ BUILT_SOURCES = parser.h
 AM_YFLAGS = -d
 lib_LTLIBRARIES	=	libmdbsql.la
 libmdbsql_la_SOURCES=	mdbsql.c parser.y lexer.l 
-if !HAVE_GLIB
+if FAKE_GLIB
 libmdbsql_la_SOURCES += ../libmdb/fakeglib.c
 endif
 libmdbsql_la_LDFLAGS = -version-info 2:0:0 -export-symbols-regex '^mdb_sql_'

src/util/Makefile.am

@@ -9,7 +9,7 @@ mdb_sql_SOURCES = mdb-sql.c
 mdb_ver_SOURCES = mdb-ver.c
 mdb_import_SOURCES = mdb-import.c
 updrow_SOURCES = updrow.c
-if !HAVE_GLIB
+if FAKE_GLIB
 mdb_export_SOURCES += ../libmdb/fakeglib.c
 mdb_schema_SOURCES += ../libmdb/fakeglib.c
 mdb_tables_SOURCES += ../libmdb/fakeglib.c