configure.librdkafka shall not be executable
Added redundant but correctly spelled "committed_offset" field to stats (issue #80)

Old field, "commited_offset" remains in place until next API version
Added "msgs" to toppar stats output

This is the total number of messages that have been enqueued on toppar.
Revamped rd_kafka_avg_t

Added GAUGE and COUNTER types with proper averaging for both and
also fixed so that avg's are properly locked
C++ info update
WIP: tabular rdkafka_performance output
mklove update to make --enable-profiling work
Added Metadata API (issues #90 and #94)
Improved locking
Added RD_IS_CONSTANT()
rdkafka_example: Added -L (list) mode to list metadata
rdkafka_performance: added tabular output, and more..

 * Better verbosity control (-v and -q)
 * -u enables tabular output
 * extract rtt from rdkafka stats
Additional valgrind suppressions
Updated symbols test with new metadata symbols