message catalogs: fix comment lines, also remove linux hack in merge.c

According to the spec, blank lines in message catalogs or lines
beginning with '$ ' are valid comments.

However, there were many cases where lines in the message catalogs
contained just a single '$', without the required space after it.

Under linux, this caused 126766 error lines (in my builds) of the
form:

... unknown directive `': line ignored

This also causes gencat to exit with a non-0 exit code.  Even though
gencat says it ignores the line, it really doesn't.

An early porting change to programs/localized/util/merge.c was made to
ignore this return value on linux.  This hack has now been removed.

Build logs are a lot smaller and cleaner now.

cde/programs/localized/de_DE.ISO8859-1/msg/dthelpgen.msg

@@ -31,20 +31,20 @@ $
 $quote "
 
 $set 1
-$
+$ 
 $ _DtMessage 1 is the usage message
-$
+$ 
 $ Localize only the words 'directory', 'name', and 'language'.
 $ 'directory' means the directory name in which the resulting files
 $ will be placed. 'name' mean what base name to give the files placed
 $ in 'directory'. 'language' means which localized versions of help files
 $ to look for.
-$
+$ 
 
 1 "%s [-dir <Verzeichnis>] [-generate] [-file <Name>] [-lang <Sprache>]\n"
-$
+$ 
 $ Mesages 2-18 are error messages.
-$
+$ 
 
 2 "%s: Element von %s ist kein Verzeichnis\n"
 
@@ -84,35 +84,35 @@ Ausf
 19 "%s: Es kann kein Speicher zugeordnet werden\n"
 
 20 "%s: Ungültige Sprache: %s\n"
-$
+$ 
 
 $set 2        Redefine set#
 
-$
+$ 
 $ Specifies the character set used to create this file
-$
+$ 
 $ This must be localized for the various languages. That is
 $ for Japanese shift JIS, it would be 'ja_JP.SJIS'; for Japanese
 $ EUC it would be 'ja_JP.eucJP'. For files written using
 $ HP Roman8 character set it would be '<lang+terr>.HP-ROMAN8', etc.
 $ The set of allowable locale strings can be found in
 $ /usr/dt/config/svc/CDE.lcx
-$
+$ 
 
 1 "de_DE.ISO-8859-1"
-$
+$ 
 $ Specifies the title for the browser.
 $ It is used in the body of text displayed to the user.
-$
+$ 
 
 2 "Willkommen im Hilfemanager"
-$
+$ 
 $ Specifies the body of text displayed in the browser.
-$
+$ 
 $ When localizing, DO NOT alter any text between the "<" and ">" pairs.
 $ That is - DO NOT localize the tags such as <ABBREV> and <PARAGRAPH>.
 $           DO     localize the text between the tags.
-$
+$ 
 
 3 "<ABBREV>Willkommen im Hilfemanager</ABBREV>        \
 <PARAGRAPH>Jeder der nachfolgend aufgeführten Titel stellt eine \n\
@@ -126,19 +126,19 @@ eine Produktfamilie den zugeh
 Innerhalb der Produktfamilie das gewünschte Thema suchen und den zugehörigen Titel auswählen. \n\
 <PARAGRAPH first 1 left 3 label \"<CHAR C.DT-SYMBOL-1><0xB7></>\"> \
 Durch Drücken von F1 kann jederzeit Hilfe aufgerufen werden.</PARAGRAPH>"
-$
+$ 
 $ Specifies the Volume Title
-$
+$ 
 
 4 "Hilfe - Hauptthema"
-$
+$ 
 $ Specifies the preamble to the help file if no volumes or family files
 $ are found.
-$
+$ 
 $ When localizing, DO NOT alter any text between the "<" and ">" pairs.
 $ That is - DO NOT localize the tags such as <ABBREV> and <PARAGRAPH>.
 $           DO     localize the text between the tags.
-$
+$ 
 
 $quote
 5 <ABBREV>Willkommen im Hilfemanager</ABBREV>\
@@ -146,29 +146,29 @@ $quote
 <TYPE serif><WEIGHT bold><SIZE 12><ANGLE italic>\
  Hinweis:\ \ \ Keine Hilfe
 
-$
+$ 
 $ Specifies the title to use in the dthelpgen dtksh dialog.
-$
+$ 
 
 $quote "
 6 "dthelpgen"
-$
+$ 
 $ Specifies the message to display in the dthelpgen dtksh dialog.
 $ This message indicates that dthelpgen is building (or rebuilding)
 $ the browser information.
-$
+$ 
 
 7 "Informationen für Anzeigeprogramm werden generiert. Bitte warten."
-$
+$ 
 
 $set 3        Redefine set#
 
-$
+$ 
 $ ******* Text Formatting Templates ********
 $ DO NOT TRANSLATE THESE MESSAGES
 $ DO NOT CHANGE THESE MESSAGES
 $ DO NOT LOCALIZE THESE MESSAGES
-$
+$ 
 
 1 "<TOPIC charset %s>"