fix handling of the defines of optional deps when cross-compiling
prepare for c++11: stop forcing -ansi
fix compile of expression grammer with clang++/libc++/c++11
fix debug.cpp error output (now compiles against libc++)
support optionally compiling with -std=c++11 on OSX / clang / apple libc++ / boost 1.53 - refs #1683
fix PHOENIX_V3 compile of svg generator
fix up type casting
fix narrowing issue in miniz - closes #1967
boost gil narrowing only impacts clang++ it appears and not g++ 4.6.3 with -std=c++0x (TODO: checkout newer g++ with -std=c++11
Merge branch 'master' into skia-renderer
+ correct skia usage