Enable memory cleanup in Clang, otherwise 500KB lost per compile
Enable memory cleanup in Clang, otherwise 500KB lost per compile

Since it is meant for the command line, clang ships with no memory
cleanup. We intend to run as a long-lived process, so enable that
cleanup. Valgrind now reports only trivial (and non-increasing over
time) memory leaks.

Signed-off-by: Brenden Blanco <8e41c261aa8ddb01230a40c21c26a049c1f6d041@plumgrid.com>

arslanabbasi/bcc,mkacik/bcc,iovisor/bcc,mkacik/bcc,shodoco/bcc,mbudiu-bfn/bcc,romain-intel/bcc,tuxology/bcc,tuxology/bcc,romain-intel/bcc,romain-intel/bcc,mshahbaz/bcc-deprecated,arslanabbasi/bcc,bpowers/bcc,zaafar/bcc,mkacik/bcc,bpowers/bcc,iovisor/bcc,arslanabbasi/bcc,shodoco/bcc,mkacik/bcc,shodoco/bcc,shodoco/bcc,mbudiu-bfn/bcc,iovisor/bcc,brendangregg/bcc,tuxology/bcc,romain-intel/bcc,mbudiu-bfn/bcc,mshahbaz/bcc-deprecated,mkacik/bcc,romain-intel/bcc,arslanabbasi/bcc,mbudiu-bfn/bcc,iovisor/bcc,brendangregg/bcc,zaafar/bcc,tuxology/bcc,zaafar/bcc,mcaleavya/bcc,mshahbaz/bcc-deprecated,iovisor/bcc,zaafar/bcc,brendangregg/bcc,shodoco/bcc,mcaleavya/bcc,mcaleavya/bcc,mcaleavya/bcc,mcaleavya/bcc,tuxology/bcc,brendangregg/bcc,brendangregg/bcc,bpowers/bcc,mshahbaz/bcc-deprecated,bpowers/bcc,mbudiu-bfn/bcc,bpowers/bcc,zaafar/bcc,mshahbaz/bcc-deprecated,arslanabbasi/bcc