fix compile warnings: NanSymbol deprecated, fixes #37
Merge pull request #57 from mapbox/fix-nan-warnings

fix compile warnings: NanSymbol deprecated, fixes #37
uncrustify source code and make C++11 compatible
fix s2 in C++11 compile mode
add C++11 switches to gyp file
install g++4.7 backport
fix broken C++11 flag on linux
output gcc version before build
set compiler to use thru environment variable
ignore const qualifiers during compile (on purpose)
ignore const qualifiers during compile (on purpose)
fix signed/unsigned comparisons
fix signed/unsigned comparisons, use prefix increment consistently
ignore unused hard-coded constant