Re-builds the ELF libeltc binaries to directly target the __wrap_
versions of malloc, calloc, realloc, and free.  This avoids libc for
statically linked uses rather than solely relying on the DR private
loader to redirect.  Updates *all* of the binaries: aarch64, android,
arm EABI, arm EABIHF, macho, pecoff lib32, pecoff lib64.

Fixes #4087

Changes the __wrap_ and redirect_ malloc routines to be cross-platform
and usable on Windows.

Clang-formats the libelftc headers we share.

Adds strdup redirection.  Updates the x86, pecoff, and macho libelftc
binaries for strdup and r3530.

Adds notes about r3531 libelftc bug to x86, pecoff, and macho.

Fixes libelftc-pecoff.patch which had all the added files stripped out
by e345a54!!

…belftc-malloc

…nstructions for r3530 and strdup