Improve support for the Cham script and languages

* etc/NEWS: Announce the new 'cham' input method.
* etc/HELLO: Fix the order of letters in the Cham greeting.
Remove redundant newlines (reported by Ulrich Mueller
<ulm@gentoo.org>).

* lisp/language/cham.el ("Cham"): Add input-method entry.
* lisp/leim/quail/cham.el: New file.
* lisp/international/fontset.el (setup-default-fontset): Add an
entry for Cham.

etc/HELLO

@@ -30,22 +30,16 @@ Bengali (বাংলা)	নমস্কার
 Braille	⠓⠑⠇⠇⠕
 Burmese (မြန်မာ)	မင်္ဂလာပါ
 C	printf ("Hello, world!\n");
-Cham (ꨌꩌ)	ꨦꨤꩌ ꨦꨰꨁ
-
+Cham (ꨌꩌ)	ꨦꨤꩌ ꨦꨁꨰ
 Cherokee (ᏣᎳᎩ ᎦᏬᏂᎯᏍᏗ)	ᎣᏏᏲ / ᏏᏲ
 Comanche /kəˈmæntʃiː/	Haa marʉ́awe
-
 Cree (ᓀᐦᐃᔭᐍᐏᐣ)	ᑕᓂᓯ / ᐙᒋᔮ
-
 Czech (čeština)	Dobrý den
 Danish (dansk)	Hej / Goddag / Halløj
 Dutch (Nederlands)	Hallo / Dag
 Efik  /ˈɛfɪk/	Mɔkɔm
-
 Egyptian Hieroglyphs (𓂋𓐰𓏤𓈖𓆎𓅓𓏏𓐰𓊖)	𓅓𓊵𓐰𓐷𓏏𓊪𓐸, 𓇍𓇋𓂻𓍘𓇋
-
 Emacs	emacs --no-splash -f view-hello-file
-
 Emoji	👋
 English /ˈɪŋɡlɪʃ/	Hello
 Esperanto	Saluton (Eĥoŝanĝo ĉiuĵaŭde)
@@ -61,7 +55,6 @@ Hebrew (עִבְרִית)	שָׁלוֹם
 Hungarian (magyar)	Szép jó napot!
 Hindi (हिंदी)	नमस्ते / नमस्कार ।
 Inuktitut (ᐃᓄᒃᑎᑐᑦ)	ᐊᐃ
-
 Italian (italiano)	Ciao / Buon giorno
 Javanese (ꦧꦱꦗꦮꦶ)	console.log("ꦲꦭꦺꦴ");
 Kannada (ಕನ್ನಡ)	ನಮಸ್ಕಾರ
@@ -69,7 +62,6 @@ Khmer (ភាសាខ្មែរ)	ជំរាបសួរ
 Lao (ພາສາລາວ)	ສະບາຍດີ / ຂໍໃຫ້ໂຊກດີ
 Malayalam (മലയാളം)	നമസ്കാരം
 Maldivian (ދިވެހި)	އައްސަލާމު ޢަލައިކުމް / ކިހިނެހް؟
-
 Maltese (il-Malti)	Bonġu / Saħħa
 Mathematics	∀ p ∈ world • hello p  □
 Mongolian (монгол хэл)	Сайн байна уу?
@@ -85,7 +77,6 @@ Swedish (svenska)	Hej / Goddag / Hallå
 Tamil (தமிழ்)	வணக்கம்
 Telugu (తెలుగు)	నమస్కారం
 TaiViet (ꪁꪫꪱꪣ ꪼꪕ)	ꪅꪰꪙꫂ ꪨꪮꫂ ꪁꪫꪱ / ꪅꪽ ꪨꪷ ꪁꪫꪱ
-
 Thai (ภาษาไทย)	สวัสดีครับ / สวัสดีค่ะ
 Tibetan (བོད་སྐད་)	བཀྲ་ཤིས་བདེ་ལེགས༎
 Tigrigna (ትግርኛ)	ሰላማት
@@ -99,7 +90,6 @@ Vietnamese (tiếng Việt)	Chào bạn
 </x-charset><x-charset><param>chinese-gb2312</param>Chinese (中文,普通话,汉语)	你好
 </x-charset><x-charset><param>chinese-big5-1</param>Cantonese (粵語,廣東話)	早晨, 你好
 </x-charset><x-charset><param>korean-ksc5601</param>Korean (한글)	안녕하세요 / 안녕하십니까
-
 </x-charset>
 
 

etc/NEWS

@@ -827,6 +827,10 @@ so e.g. like 'C-x 8 [' inserts a left single quotation mark,
 Added a new Mozhi scheme.  The inapplicable ITRANS scheme is now
 deprecated.  Errors in the Inscript method were corrected.
 
+---
+*** New input method 'cham'.
+There's also a Cham greeting in 'etc/HELLO'.
+
 ** Ispell
 
 +++

lisp/international/fontset.el

@@ -719,6 +719,7 @@
 		    georgian
 		    cherokee
 		    canadian-aboriginal
+                    cham
 		    ogham
 		    runic
 		    symbol

lisp/language/cham.el

@@ -35,6 +35,7 @@
  "Cham" '((charset unicode)
 	      (coding-system utf-8)
 	      (coding-priority utf-8)
+              (input-method . "cham")
               (sample-text . "Cham (ꨌꩌ)\tꨦꨤꩌ ꨦꨰꨁ")
               (documentation . "\
 The Cham script is a Brahmic script used to write Cham,