master: whitespace fix in Utils.pm
master: avoid having 2 concurrent $htmlconfig
master: undef the config pre-reload (frees mem)
master: RAM usage for $cache
Merge branch 'fix-html-memleak' into stable-2.0
p/http_loadtime: fix failure on FreeBSD

Closes: #947
p/http_loadtime: do not reuse $TMPDIR

As $TMPDIR is a special var in shell, using it is bumpy. Specially
on cleanup with a

    rm -Rf $TMPDIR

This commit uses an innocent var instead.