FABIC: musl : stdio.h & sys/stat.h : #define xxx64 xxx, related to LFS64(x) func. def. ; REPLACED with explicit decl.

For LLVM Clang compilation... due to the fact that the macro gets
expanded in an enumeration.
FABIC: musl : Hack for non-existing 'dlvsym' func.

See Glibc's /usr/include/dlfcn.h

Note: The 3rd argument is a version for the given symbol being searched
for, set this to 0 instead of passing the argument as I couldn't find
the definition for impl. of __dlsym(x,y,z) :/
LINUX HEADERS 3.12.0 : Added under misc/linux-headers

@link http://www.linuxfromscratch.org/lfs/view/7.6-rc1/chapter06/linux-headers.html

    make mrproper

    make INSTALL_HDR_PATH=misc/linux-headers/ headers_install

    find misc/linux-headers/ \( -name .install -o -name ..install.cmd \) -delete

For addition to local/include/ as needed, e.g. :

    cp -riv misc/linux-headers/include/* local/include/

Doin' so as I'm trying to build LLVM/Clang against musl-libc, and it
ends up including some of the host's include files that breaks the
build.
FABIC: musl: #if 0 ... around definition of struct sysinfo {} #endif

Breaks LLVM/Clang build with :

    In file included from /home/fabi/dev/llvm2/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cc:63:
    In file included from /home/fabi/dev/llvm2/local/include/linux/sysctl.h:25:
    In file included from /home/fabi/dev/llvm2/local/include/linux/kernel.h:4:
    /home/fabi/dev/llvm2/local/include/linux/sysinfo.h:7:8: error: redefinition of 'sysinfo'
    struct sysinfo {
	   ^
    /home/fabi/dev/llvm2/local/include/sys/sysinfo.h:10:8: note: previous definition is here
    struct sysinfo {
	   ^

NOTE: Installed the Linux headers under local/include/ along the way.
FABIC: musl: features.h : Minor #if 1, instead of if true
SUBMODULE: GNU binutils 2.24 added under misc/binutils/

https://www.gnu.org/software/binutils/

Commit: http://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=237df3fa4a1d939e6fd1af0c3e5029a25a137310
SUBMODULE: GNU GCC 4.9.1 added under misc/gcc/
SUBMODULE gnu-libc for GNU glibc under misc/glibc @ v2.20
FABIC: environment.sh & functions.sh
FABIC: WIP misc/configure_Xxx.sh for binutils, gcc & glibc
FABIC: musl: Fixed musl-libc/include/sys/sysinfo.h : #include <linux/sysinfo.h>
FABIC: test.c & wget_gcc_deps.sh