fixed memory allocation error in range_buffer #70

fixes #70
Merge branch 'bugs/70'
refs #70 Add a test to the range buffer that verifies the buf grows
properly after a small append into a large append
Merge branch 'bugs/70'
#50 add long tail counts to global status
Fix this test - did not get built or tested properly on my end due to
BUILD_TESTING=Off in the cmake config.
Merge branch 'bugs/70'
Merge branch 'master' of github.com:Tokutek/ft-index
#50 add long tail counts to global status
Merge branch 'master' of github.com:Tokutek/ft-index
#69 measure long tail lock tree and cache table stalls
#50 count lock tree timeouts
#56 add 2 locktree escalation tests
Add a timed wait for the locktree manager's mutex, check memory
constraint in a loop without waiting for escalation to complete fully.
#56 benchmark escalation stalls
Add a timed wait for the locktree manager's mutex, check memory
constraint in a loop without waiting for escalation to complete fully.
#56 benchmark escalation stalls
#56 rebase lock tree escalation
#56 rebase lock tree escalation