[svn] * src/lock.h,src/lock.c,src/noffle.c: Add lazy lock release. Only release the lock and close the databases if (a) another process signals us SIGUSR1 indicating it wants the lock, or (b) it is explicitly requested by a call to new function Lock_syncDatabases(). When waiting for the lock, SIGUSR1 the holding process every second. This is all an attempt to minimise the number of times we need to close and open the database. When (ha!) the database is replaced by something that can handle multiple simultaneous writers (with appropriate locking) this won't be necessary.

/* For use by autoheader */

#ifndef CONFIG_H
#define CONFIG_H    /* To stop multiple inclusions. */

/* The NOFFLE config-file */
#undef CONFIGFILE

/* The default NOFFLE spool-directory */
#undef SPOOLDIR

/* Enable GNU extensions. */
#undef _GNU_SOURCE

/* Define to 'unsigned int' if not already defined by the system. */
#undef socklen_t

/* path to sendmail binary */
#undef SENDMAILPROG

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/* autoheader generated things inserted here. */
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#endif /* CONFIG_H */