Fixed a bug on macs

- Fixed an issue that made compiling glew hang on macs
- Currently using Apple LLVM version 7.0.2 (clang-700.1.81)
- Added .DS_Store files to gitignore

.gitignore

@@ -17,3 +17,4 @@
 /lib
 /tmp
 /out
+.DS_Store*

config/Makefile.darwin

@@ -15,7 +15,7 @@ endif
 LDFLAGS.STATIC =
 LDFLAGS.DYNAMIC =
 WARN = -Wall -W
-POPT = -O2
+POPT = -Os
 CFLAGS.EXTRA += -fPIC
 BIN.SUFFIX =
 LIB.SONAME    = lib$(NAME).$(SO_MAJOR).dylib

config/Makefile.darwin-ppc

@@ -14,7 +14,7 @@ endif
 LDFLAGS.STATIC =
 LDFLAGS.DYNAMIC =
 WARN = -Wall -W
-POPT = -O2
+POPT = -Os
 CFLAGS.EXTRA += -fPIC
 BIN.SUFFIX =
 LIB.SONAME    = lib$(NAME).$(SO_MAJOR).dylib

config/Makefile.darwin-universal

@@ -17,7 +17,7 @@ LDFLAGS.GL = -framework OpenGL
 endif
 LDFLAGS.DYNAMIC =
 WARN = -Wall -W
-POPT = -O2
+POPT = -Os
 CFLAGS.EXTRA += -fPIC
 BIN.SUFFIX =
 LIB.SONAME    = lib$(NAME).$(SO_MAJOR).dylib

config/Makefile.darwin-x86_64

@@ -14,7 +14,7 @@ endif
 LDFLAGS.STATIC =
 LDFLAGS.DYNAMIC =
 WARN = -Wall -W
-POPT = -O2
+POPT = -Os
 CFLAGS.EXTRA += -fPIC
 BIN.SUFFIX =
 LIB.SONAME    = lib$(NAME).$(SO_MAJOR).dylib