[CMake] XCode 2.2 beta

[Mathieu Malaterre]

Hello,

	Some people are already using Xcode 2.2 beta and if you do a cat :

$ cat /Developer/Applications/Xcode.app/Contents/version.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
         <key>BuildVersion</key>
         <string>2</string>
         <key>CFBundleShortVersionString</key>
         <string>2.2</string>
         <key>CFBundleVersion</key>
         <string>622</string>
         <key>ProjectName</key>
         <string>DevToolsIDE</string>
         <key>SourceVersion</key>
         <string>6220000</string>
</dict>
</plist>

	That means that the 'if(m_XcodeVersion == 21)' will not be used in this
case. Could we change that == to >= ? Or we need to change the parser
(cmXcodeVersionParser) to return either 15 compatible/21 compatible...

Mathieu