mod_v8: Added shell script used to fetch a specific version of V8 from git, and package it into tarballs

FS-6095 --resolve modified to protect against memory leak and make it more consistant with other modules

Check if stdint has been included before trying to declare int variants. Needed for mod_v8 build in Windows

Minor modifications on the original patch to use ftdm_hunting_direction_t
everywhere instead of ftdm_direction_t or int

Patched-by: Marc Olivier Chouinard

add legacy subdir for mods with 5.1 edition of mod_lua, change languages/mod_lua to legacy/languages/mod_lua in modules.conf to use older lua mod

This is intended to make it easier to describe to users on JIRA how
they should test build patches in a standardized manner and how to
collect a full build log that includes the exact git commit they are
building.

Previously we were including the output of `apr-1-config/apu-1-config
--libs` into CORE_LIBS.  This seemed sensible as CORE_LIBS is added in
the right places to various _LDADD and _LIBADD variables.  However we
also use the value of CORE_LIBS as dependencies in the makefile.
Astonishingly this doesn't seem to cause any issues on most
platforms (or we would have noticed sooner), but it does break things
on Mac.

Thanks-to: Seven Du <dujinfang@gmail.com>

FS-5956 --resolve

There are build issues with mod_spidermonkey on certain platforms, and
we hope to replace it soon anyway.