add mac dist dir to gitignore
mac: use 10.6 sdk

gettext (the newer versions at least) want to link to crt1.10.6.o which
is in 10.6
don't make breakpad archives right now
mac: add build script like win-dep-build.sh, now with more darwin!
mac: fix gettext undefined symbols during make install

In case anyone ever tries googling these errors, (there aren't many
results):

Undefined symbols:
  "_strerror_override", referenced from:
      _rpl_strerror in ccNrThAw.o
  "_rpl_stat", referenced from:
      _rpl_readlink in ccFg5Q0l.o
  "_rpl_lstat", referenced from:
      _rpl_realpath in ccrBgeYe.o
mac: add libIDL, libtool, xr to mac-dep-build.sh
mac: disable xmms-plugin for flac

it breaks the 'make install' portion because it tries to install into a
system directory
mac: tweak mozconfigs to use 10.6 sdk and force 32 bit builds
mac: fix taglib's cmake run
mac: add libIDL
ignore mac's .DS_Store files
don't know why these got added before, I was trying to add the archives...