Digital Alpha is no longer supported. Remove all references to __alpha and

Makefile

config/ARCHS

config/Makefile.alphacxx6

config/Makefile.alphagcc

core/base/Module.mk

core/base/inc/RConfig.h

core/lzma/Module.mk

core/newdelete/src/MemCheck.cxx

core/pcre/Module.mk

core/unix/src/TUnixSystem.cxx

etc/Makefile.arch

etc/vmc/Makefile.alphacxx6

etc/vmc/Makefile.linuxalphagcc

graf2d/freetype/Module.mk

graf2d/postscript/Module.mk

io/dcache/src/TDCacheFile.cxx

io/io/inc/TStreamerInfo.h

io/io/src/TMapFile.cxx

io/rfio/src/TRFIOFile.cxx

math/genvector/inc/Math/GenVector/BitReproducible.h