Precompile prefix header

Author: guidedways

Objective-Zip.xcodeproj/project.pbxproj

@@ -887,6 +887,7 @@
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
@@ -1466,6 +1467,7 @@
 				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
@@ -1494,6 +1496,7 @@
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
@@ -1636,6 +1639,7 @@
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;