mostly-disabled gpu allocation trace printouts.

can be enable with -DENABLE_ALLOC_TRACE when building caffe.
matcaffe: init google logging with "matcaffe" as name
makefile: remove unneeded -UNDEBUG, add commented -DENABLE_ALLOC_TRACE example cflags
Merge branch 'featpyramid' of https://github.com/forresti/caffe into featpyramid
swap matcaffe demo plane size 2000 -> 1100 (again)
matcaffe: almost-minimal commit to fix/add feat_min{Width,Height} support

note that matcaffe was broken (would compile, but would have incorrect behavior) when feat_min{Width,Height} were added these since the function that should have been taking them has 5 int args, all with defaults, and new args were added in middle of the arg list.
matcaffe demo: set interval=10 (the default) to agree with comment
remove unneeded and unused defaults from stitch_pyramid() decl
merging with matt's makefile change
I hope this works