Project: Discover both long and short build number from git

This uses the last git tag as version string and the 'git
describe' trick by Johannes for the buildnumber.

GitX.xcodeproj/project.pbxproj

@@ -757,7 +757,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "export PATH=$PATH:$HOME/bin:$HOME/local/bin:/sw/bin:/opt/local/bin:`$TARGET_BUILD_DIR/gitx --git-path`\n(echo -n \"#define BUILD_NUMBER \"; git describe|sed -e \"s/\\-/\\./\" -e \"s/v//\" -e \"s/-.*//\") > build/revision\ntouch Info.plist";
+			shellScript = "export PATH=$PATH:$HOME/bin:$HOME/local/bin:/sw/bin:/opt/local/bin:`$TARGET_BUILD_DIR/gitx --git-path`\nVERSION=$(git describe)\nLONG_VERSION=$(echo $VERSION | sed -e \"s/\\-/\\./\" -e \"s/^v//\" -e \"s/-.*//\")\nSHORT_VERSION=$(echo $VERSION | sed -e \"s/\\-.*//\" -e \"s/^v//\")\n\necho -n \"#define LONG_VERSION $LONG_VERSION\n#define SHORT_VERSION $SHORT_VERSION\" > build/revision\ntouch Info.plist";
 		};
 		F5792DFB0EDB570C001B0C31 /* Compile libgit2 */ = {
 			isa = PBXShellScriptBuildPhase;

Info.plist

@@ -49,9 +49,9 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>BUILD_NUMBER</string>
+	<string>LONG_VERSION</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.6.1</string>
+	<string>SHORT_VERSION</string>
 	<key>NSMainNibFile</key>
 	<string>MainMenu</string>
 	<key>NSPrincipalClass</key>