patches: Added bts770681_riemann_ack.

Upstream fix for the write_riemann plugin to avoid locking up a remote Riemann
instance. Thanks to Marc Fournier for reporting this.

Closes: #770681
patches: Added bts747093_lvm_segfault.

Upstream fix for a segfault in the LVM plugin. Thanks to Bernd Zeimetz and
Marc Fournier for reporting this.

Closes: #747093
patches: Added bts770683_curl_init.

Upstream fix for a segfault in plugins using libcurl caused by concurrent
memory access. Thanks to Marc Fournier for reporting this.

Closes: #770683
Cf. #735173
patches: Added bts750440_config_segfault.

Upstream fix for a segfault when including empty config files. Thanks to Bernd
Zeimetz and Marc Fournier for reporting this.

Closes: #750440, #770685
patches: Added bts770688_snmp_memleak.

Upstream fix for a memory leak in the SNMP plugin. Thanks to Marc Fournier for
reporting this.

Closes: #770688
patches: Added bts770690_java_jni_thread_detach.

Upstream fix for locking up the Java plugin by not properly detaching from the
JVM in error conditions. Thanks to Marc Fournier for reporting this.

Closes: #770690
patches: Added bts770693_timestamps.

Upstream fix for handling internal timestamps. Thanks to Marc Fournier for
reporting this.

Closes: #770693
patches: Added bts770694_loglevel.

Upstream fix to correct logging behavior when using an invalid log level.
Thanks to Marc Fournier for reporting this.

Closes: #770694
Actually enable bts770693_timestamps.dpatch.
Refreshed bts770683_curl_init.dpatch.
Document upstream commits for each patch.
bts770694_loglevel.dpatch also fixes #687067.
Released the changelog.
Refresh bts770683_curl_init.dpatch.
Build fixes for 12.04