[l2h] support of Alladin GS 5.50

[Ruslan Shevchenko]

path for 99.2beta7 is attached.
diff -udr latex2html-99.2beta7.orig/config/config.pl 
latex2html-99.2beta7/config/config.pl
--- latex2html-99.2beta7.orig/config/config.pl  Wed Jul 12 08:15:01 2000
+++ latex2html-99.2beta7/config/config.pl       Thu Jul 13 17:41:24 2000
@@ -980,7 +980,7 @@
 
       while (<GS>) {
       chomp;
-        if(/Ghostscript\s*(?:Version|BETA RELEASE|TESTER RELEASE)\s*(\d+[.]?\d*)/i) {
+        if(/Ghostscript\s*(?:Version|BETA RELEASE|TESTER RELEASE|)\s*(\d+[.]?\d*)/i) {
           $gs_version = $1;
         }
         elsif(/^\s*Available devices/i) {