ios: do not strip debug symbol

ios/IJKMediaPlayer/IJKMediaPlayer.xcodeproj/project.pbxproj

@@ -768,6 +768,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 5.1.1;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
+				STRIP_INSTALLED_PRODUCT = NO;
 			};
 			name = Debug;
 		};
@@ -788,7 +789,7 @@
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_ATOMIC_PROPERTIES = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
-				COPY_PHASE_STRIP = YES;
+				COPY_PHASE_STRIP = NO;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
@@ -798,6 +799,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 5.1.1;
 				SDKROOT = iphoneos;
+				STRIP_INSTALLED_PRODUCT = NO;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;