add support for bzip2/lzma to man2html and friends

--- man2html/glimpse_filters
+++ man2html/glimpse_filters
@@ -1,3 +1,6 @@
+*.bz2	bzip2 -d -c
+*.lzma	lzma -d -c
+*.xz	xz -d -c
 *.gz	gzip -d -c
 *.Z	gzip -d -c
 
--- man2html/scripts/cgi-bin/man/man2html
+++ man2html/scripts/cgi-bin/man/man2html
@@ -93,6 +93,12 @@
     *.bz2)
 	bzcat "$PAGE" | "$MAN2HTML" "$LL" -D "$PAGE"
 	;;
+    *.lzma)
+	lzcat "$PAGE" | "$MAN2HTML" "$LL" -D "$PAGE"
+	;;
+    *.xz)
+	xzcat "$PAGE" | "$MAN2HTML" "$LL" -D "$PAGE"
+	;;
     *)
 	"$MAN2HTML" "$LL" "$PAGE"
 	;;
@@ -103,6 +106,12 @@
 elif [ -r "$PAGE".bz2 ]
 then
 	bzcat "$PAGE".bz2 | "$MAN2HTML" "$LL" -D "$PAGE"
+elif [ -r "$PAGE".lzma ]
+then
+	lzcat "$PAGE".lzma | "$MAN2HTML" "$LL" -D "$PAGE"
+elif [ -r "$PAGE".xz ]
+then
+	xzcat "$PAGE".xz | "$MAN2HTML" "$LL" -D "$PAGE"
 else
 	"$MAN2HTML" -E "Strange... Cannot find (or read) $PAGE."
 fi
--- man2html/scripts/cgi-bin/man/mansearch
+++ man2html/scripts/cgi-bin/man/mansearch
@@ -153,7 +153,7 @@
       }
       print "<DT> <a href=\"" cgipath "/man2html?" fullname "\">";
       textname = filename;
-      sub(/\.(gz)|Z|z$/, "", textname);
+      sub(/\.([zZ]|gz|bz2|lzma|xz)$/, "", textname);
       sub(/\./, "(", textname);
       textname = textname ")";
       print textname;
--- man2html/scripts/cgi-bin/man/mansec
+++ man2html/scripts/cgi-bin/man/mansec
@@ -128,7 +128,7 @@
 				# Print out alphabetic quick index and other links
       }
 				# Split page.n into "page" and "n" and generate an entry
-      sub(/[.]([zZ]|(gz))$/, "", manpage);
+      sub(/[.]([zZ]|gz|bz2|lzma|xz)$/, "", manpage);
       match(manpage, /[.][^.]+$/);      
       title = substr(manpage, 1, RSTART - 1);
       if (section != "all") {