patches for -fno-common (thanks to D. Seifert of Gentoo team)

source/texk/web2c/luatexdir/ChangeLog

source/texk/web2c/luatexdir/font/luatexfont.h

source/texk/web2c/luatexdir/font/vfpacket.c

source/texk/web2c/luatexdir/image/writeimg.h

source/texk/web2c/luatexdir/luatex_svnversion.h

source/texk/web2c/luatexdir/pdf/pdftables.c

source/texk/web2c/luatexdir/pdf/pdftables.h

source/texk/web2c/luatexdir/tex/textoken.c