fix: path resolving was wrong when built as a subproject

Signed-off-by: Filip Wasil <filip.wasil@gmail.com>
Compile fix for parallelLinearBvh.cl on OS X Intel HD 5000
-- Corrected cast of 32-bit int to 64-bit pointer

-- Removes 64-bit portability issue.
remove #include <stdbool.h> it breaks MSVC 2010
enable gtest by default when using premake, added flag without-gtest
use gtest ASSERT_EQ( expected_value, actual_value) instead of the reverse,
this fixes issue 205 (https://github.com/bulletphysics/bullet3/issues/205)
Merge pull request #209 from erwincoumans/master

see https://github.com/erwincoumans/bullet3/commit/670576ec721c0d490f319a65778dad19814d3fc3
premake4 build: allow to dynamically load X11 if X11 system headers/library is missing
premake4 build: allow to dynamically load OpenGL/GLEW/glx if system headers are missing
premake4: add option to force dynamic loading of OpenGL and X11
--force_dlopen_opengl and --force_dlopen_x11
Merge remote-tracking branch 'github_bulletphysics/master'
Merge pull request #196 from jackoalan/parallel_linear_bvh_cl_fix

Compile fix for parallelLinearBvh.cl on OS X Intel HD 5000
Merge pull request #187 from filipwasil/subproject_build_fix

fix: path resolving was wrong when built as a subproject
Merge pull request #212 from erwincoumans/master

dynamic loading of OpenGL/X11
add improved btGeneric6DofSpring2Constraint, thanks to Puhr Gabor and Tamas Umenhoffer!
improved the new demo testbed (work-in-progress)
add basic Lua demo, import URDF test, STL import, obj import
fix Linux  and Cmake build
Merge pull request #214 from erwincoumans/master

fix Linux  and Cmake build
fix mac build
Merge pull request #201 from bgossage/fix_pointer_cast

-- Corrected cast of 32-bit int to 64-bit pointer
remove some warnings
premake4: don't use recursive file globbing in LinearMath and BulletCollision
Merge pull request #215 from erwincoumans/master

remove some warnings
fix more warnings in BulletCollision, and fix CMakeLists for Linux