misc: added a 'fixlicense' script, which can be used to ensure license headers are consistent across the source tree.
misc: updated LICENSE and CONTRIB, LICENSE now defers to CONTRIB for actually defining copyright holders (rather than Copyright (c) YEAR NAMES).
all: committing results of fixlicense script run.
build: new pre-commit hook to fix license on files as they are committed.

This pre-commit hook is linked into place by SCons on every build if it
does not already exist.
build: bump GCC version to 4.8.2, Binutils to 2.24, NASM to 2.11.02
build: updated GCC and Binutils patches for the new versions of each.
build: add -Wno-unused-parameter to warning flags, as -Wunused-paramter is now enabled by default and spews warnings.
build: add -fno-asynchronous-unwind-tables to kernel/module build options to avoid relocations to .eh_frame (which we strip).
posix: remove 'c++' include directory as we get C++ headers from the GCC pup package now (and they conflict).
build: make sure libstdc++ is built as part of creating our cross-compiler (this gets us C++ headers and libstdc++).
build: now that the cross-compiler also builds libstdc++ (and provides headers), it is not necessary for Easy Build to install GCC any longer.
posix: sys/resource.h was missing _{BEGIN,END}_STD_C, oops.
misc: add C++ headers to .gitignore, as they now come from the toolchain build.
build: ported changes to Easy Build x86 to Easy Build x64
build: Easy Build x86 now just runs Easy Build x64, and SConstruct will abort the build from now on if it detects a non-64-bit toolchain.

TODO: this breaks not-x86 builds too.
build: extend Easy Build to handle the fact that building libstdc++ requires libc.
build: fix typo in buildLibm.py
build: when cross-compiling libstdc++, don't check for linker features as this happens after GCC_NO_EXECUTABLES.
build: toolchain libstdc++ build should not build a PCH file, should attempt to build PIC where possible.
libload: specify libraries using -l rather than passing their explicit paths, allowing the compiler's search path to take precedence over scons LIBPATH