jemalloc: apply recommended optimizations

The Jemalloc project suggests using
-O3 and -funroll-loops for optimization.
This commit enables these flags by default
in order to improve the performance.

Change-Id: Ibb8305be459db2e670e335ab6eac333855654379
Signed-off-by: Alex Naidis <alex.naidis@linux.com>
2 files changed