Add --with-malloc option to check jemalloc
check USE_JEMALLOC flag in Makefile.am
Update autoheader template
include zmalloc.h
fix linking issue
check jemalloc version
Fix autoconf checking
travis-ci is using jemalloc 2.1+
use -std=c99
remove jemalloc
Add --with-malloc to travis config
delete generated config.h
ignore config.h
what if we always use -ljemalloc
use jemalloc only in jemalloc major version > 2
update Makefile.am
enable jemalloc only when major version > 2
update config.h.in