dropped Mac OS 10.4 support and switched to llvm clang/gcc 4.2 as default Mac compiler (sorry Tiger users)

platform/macosx/love.xcodeproj/project.pbxproj

@@ -1774,7 +1774,7 @@
 				GCC_INPUT_FILETYPE = automatic;
 				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = NO;
 				GCC_TREAT_NONCONFORMANT_CODE_ERRORS_AS_WARNINGS = NO;
-				GCC_VERSION = 4.0;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = NO;
 				GCC_WARN_ABOUT_MISSING_NEWLINE = NO;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = NO;
@@ -1807,7 +1807,7 @@
 				PREBINDING = NO;
 				PRODUCT_NAME = love;
 				SCAN_ALL_SOURCE_FILES_FOR_INCLUDES = YES;
-				SDKROOT = macosx10.4;
+				SDKROOT = macosx10.5;
 				USER_HEADER_SEARCH_PATHS = "";
 				VALID_ARCHS = "i386 ppc";
 				WARNING_CFLAGS = (