Set preprocessor symbols for internal builds.

Signal.xcodeproj/project.pbxproj

@@ -3196,6 +3196,7 @@
 					"DEBUG=1",
 					"$(inherited)",
 					HAVE_CONFIG_H,
+					"INTERNAL=1",
 				);
 				GCC_STRICT_ALIASING = NO;
 				GCC_WARN_MULTIPLE_DEFINITION_TYPES_FOR_SELECTOR = NO;
@@ -3851,6 +3852,7 @@
 					"DEBUG=1",
 					"$(inherited)",
 					HAVE_CONFIG_H,
+					"INTERNAL=1",
 				);
 				GCC_STRICT_ALIASING = NO;
 				GCC_WARN_MULTIPLE_DEFINITION_TYPES_FOR_SELECTOR = NO;
@@ -3912,6 +3914,8 @@
 					"$(inherited)",
 					HAVE_CONFIG_H,
 					"RELEASE=1",
+					"INTERNAL=1",
+					"DEBUG=1",
 				);
 				GCC_STRICT_ALIASING = NO;
 				GCC_WARN_MULTIPLE_DEFINITION_TYPES_FOR_SELECTOR = NO;

Signal.xcodeproj/xcshareddata/xcschemes/Signal-Internal.xcscheme

@@ -63,18 +63,6 @@
             ReferencedContainer = "container:Signal.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <EnvironmentVariables>
-         <EnvironmentVariable
-            key = "INTERNAL"
-            value = ""
-            isEnabled = "YES">
-         </EnvironmentVariable>
-         <EnvironmentVariable
-            key = "DEBUG"
-            value = ""
-            isEnabled = "YES">
-         </EnvironmentVariable>
-      </EnvironmentVariables>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>