Main.java (main): Handle '-p'.

libjava:
	* gnu/gcj/tools/gcj_dbtool/Main.java (main): Handle '-p'.
	(usage): Document '-p'.
	* Makefile.in: Rebuilt.
	* Makefile.am (dbexecdir): New variable.
	(db_name): Likewise.
	(dbexec_DATA): Likewise.
	($(db_name)): New target.
	(AM_CXXFLAGS): Define LIBGCJ_DEFAULT_DATABASE.
	* java/lang/natRuntime.cc (insertSystemProperties): Set default
	system database.
gcc/java:
	* gcj.texi (Invoking gcj-dbtool): Document 'gcj-dbtool -p'.
	(libgcj Runtime Properties): Document the default .db.

From-SVN: r96303

libjava/java/lang/natRuntime.cc

@@ -531,6 +531,9 @@ java::lang::Runtime::insertSystemProperties (java::util::Properties *newprops)
   // The path to libgcj's boot classes
   SET ("sun.boot.class.path", BOOT_CLASS_PATH);
 
+  // If there is a default system database, set it.
+  SET ("gnu.gcj.precompiled.db.path", LIBGCJ_DEFAULT_DATABASE);
+
   // Set some properties according to whatever was compiled in with
   // `-D'.  Important: after this point, the only properties that
   // should be set are those which either the user cannot meaningfully