posix: execve, if an INTERP section is present, now destroys the old dynamic linker instance used to find the INTERP.
posix: execve, if an INTERP section is present, now destroys the old dynamic linker instance used to find the INTERP.

This ensures we don't leak memory on the original executable image when we
switch which file we're about to load into the address space.

jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree,jmolloy/pedigree