bootstrap: Add Mes bootstrap.

bootstrap: Add Mes bootstrap.

* gnu/packages/patches/mes-nyacc-0.86.0.patch: Support bootstrap build.
* gnu/packages/commencement.scm (%fake-bootstrap mes-boot0, mescc-tools-boot,
nyacc-boot, mes-boot, tcc-boot0, tcc-boot, make-mesboot0, diffutils-mesboot,
binutils-mesboot0, gcc-core-mesboot, mesboot-headers, glibc-mesboot0,
gcc-mesboot0, binutils-mesboot, make-mesboot, gmp-boot, mpfr-boot, mpc-boot,
gcc-mesboot1, gcc-mesboot1-wrapper, glibc-headers-mesboot, glibc-mesboot,
gcc-mesboot, gcc-mesboot-wrapper, m4-mesboot): New variable.
* gnu/packages/patches/binutils-boot-2.20.1a.patch: New file. New file.
* gnu/packages/patches/gcc-boot-2.95.3.patch: New file.
* gnu/packages/patches/gcc-boot-4.7.4.patch: New file.
* gnu/packages/patches/glibc-boot-2.16.0.patch: New file.
* gnu/packages/patches/glibc-boot-2.2.5.patch: New file.
* gnu/packages/patches/glibc-bootstrap-system-2.16.0.patch: New file.
* gnu/packages/patches/tcc-boot-0.9.27.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add them.