missing-macros: add more m4 macros from gettext, ossp-js, libmikmod, libdnet

tools/missing-macros/Makefile

tools/missing-macros/src/README

tools/missing-macros/src/m4/dnet.m4

tools/missing-macros/src/m4/esd.m4

tools/missing-macros/src/m4/fake-gtk-doc-check.m4

tools/missing-macros/src/m4/glibc2.m4

tools/missing-macros/src/m4/glibc21.m4

tools/missing-macros/src/m4/intdiv0.m4

tools/missing-macros/src/m4/intmax.m4

tools/missing-macros/src/m4/inttypes-pri.m4

tools/missing-macros/src/m4/inttypes_h.m4

tools/missing-macros/src/m4/progtest.m4

tools/missing-macros/src/m4/stdint_h.m4

tools/missing-macros/src/m4/uintmax_t.m4

tools/missing-macros/src/m4/va_copy.m4

tools/missing-macros/src/m4/wint_t.m4