Item11267: Don't use "HEAD" to detect pseudo install.

A real, non-pseudo-installed extension will crash configure if a perl
version object is compared to an alpha string.

9999.99_999 will be used to indicate a pseudo-installed release.

git-svn-id: http://svn.foswiki.org/trunk@15909 0b4bb1d4-4e5a-0410-9cc4-b2b747904278

core/lib/Foswiki/Configure/Dependency.pm

@@ -220,7 +220,7 @@ sub studyInstallation {
             if ( -l "$dir/$path" ) {
 
                 # Assume pseudo-installed
-                $this->{installedVersion} = 'HEAD';
+                $this->{installedVersion} = '9999.99_999';
             }
             last;
         }

core/lib/Foswiki/Configure/UIs/EXTENSIONS.pm

@@ -339,7 +339,7 @@ sub _rawExtensionRows {
         if ( $ext->{installedRelease} ) {
 
             # The module is installed; check the version
-            if ( $ext->{installedVersion} eq 'HEAD' ) {
+            if ( $ext->{installedVersion} eq '9999.99_999' ) {
 
                 # pseudo-installed
                 $install = 'pseudo-installed';