Fix link errors against libgtestlib.a
Merge branch 'master' of https://github.com/phuang/regal
Emu::Quads complete and enabled for ES2 and Core contexts
Fix: Properly categorize EGL_VERSION_1_0 enums, and handle EGL_VERSION_1_3 and EGL_VERSION_1_4
Emu::Iff - change Modelview to ModelView to match GL built-ins properly
libpng - ARM and Neon support added from upstream
Android logging - skip logcat if we are logging to a file
GLbitfield logging for glPushClientAttrib
Windows fixup - detect ES2 context and avoid querying desktop context limits
Fixup - Ensure that Init::init() happens before Init::makeCurrent
Query REGAL_SYS_ES2 and REGAL_SYS_GL environment variables - need to choose right .so to load