Compile on Mavericks with gcc47.
Add my MacPorts setup steps.
Chase down why -march=native isn't working for gcc after 4.2.  Add some comments about that.
The simple switch is just disabling AVX.
Missing a negation does bad things to meaning.
MacPorts will gladly install more than one library at a time.
Move Mac-specific settings into Makefile.mac from Makefile.
Use ESTIMATORNICKNAME=lbfgs-l1c10F1n1p2 to match the other current settings.
A Git .gitignore copied from .hgignore.
Tidied up .gitignore and add second-stage/nbest and tmp dirs.
Set LD_LIBRARY_PATH too.
Add a rule to .LIBPATTERNS so that SParseval will make.
Don't set standard make variables if they are already set.
index on BLLIP_FOR_MACOS: bd9be5c Use ESTIMATORNICKNAME=lbfgs-l1c10F1n1p2 to match the other current settings.
WIP on BLLIP_FOR_MACOS: bd9be5c Use ESTIMATORNICKNAME=lbfgs-l1c10F1n1p2 to match the other current settings.
Merge commit 'stash' into BLLIP_FOR_MACOS

Conflicts:
	second-stage/programs/wlle/Makefile
Seems to build and run everything (including SParseval and the
convenience scripts) on both Mountain Lion and Mavericks.
Merge branch 'BLLIP_FOR_MACOS' into BLLIP_ON_MAVERICKS

Conflicts:
	Makefile
	second-stage/programs/wlle/Makefile
Remove Mac-specific stuff from Makefile.
Always use 'gzip -c' to avoid failures caused by extra hardlinks.
index on BLLIP_ON_MAVERICKS: 4bc24de Remove Mac-specific stuff from Makefile.